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EDIT: The incorrect A rhomb substitution has been fixed. Apologies to anoyone who had started working on a solution.

Consider the following substitutions, where the substituted rhomb(us) is scaled up and shown in red:

EDIT: Note the anchor points (circle) created where a corner of each new rhomb touches the substituted rhomb. Also note the substitution's anchor point (black circle).

A rhomb (144°, 36°)

... becomes ...

B rhomb (108°, 72°)

... becomes ...

Each substitution is made up of some combination of A rhombs and B rhombs, on which the same substitutions can be performed.

A tiling can be created by repeating the substitutions n times.

After n=2 substitutions of A rhomb:

EDIT: The substitution is oriented by aligning the rhomb's anchor point with the substitution's anchor point

In the fewest bytes of code (given input n>=0) draw the tiling after n substitutions, where n=0 is A rhomb

Notes:

• The red lines and anchor points shouldn't be included, they only illustrate the substitution.
• In each substitution the tiling is scaled up so the rhombs have a constant size.
• Any rotation is optional.
• Graphical choices (colour, dimensions, cropping etc.) are optional if not exploited for loopholes.

EDIT: The incorrect A rhomb substitution has been fixed. Apologies to anoyone who had started working on a solution.

Consider the following substitutions, where the substituted rhomb(us) is scaled up and shown in red:

EDIT: Note the anchor points (circle) created where a corner of each new rhomb touches the substituted rhomb. Also note the substitution's anchor point (black circle).

A rhomb (144°, 36°)

... becomes ...

B rhomb (72°, 108°)

... becomes ...

Each substitution is made up of some combination of A rhombs and B rhombs, on which the same substitutions can be performed.

A tiling can be created by repeating the substitutions n times.

After n=2 substitutions of A rhomb:

EDIT: The substitution is oriented by aligning the rhomb's anchor point with the substitution's anchor point

In the fewest bytes of code (given input n>=0) draw the tiling after n substitutions, where n=0 is A rhomb

Notes:

• The red lines and anchor points shouldn't be included, they only illustrate the substitution.
• In each substitution the tiling is scaled up so the rhombs have a constant size.
• Any rotation is optional.
• Graphical choices (colour, dimensions, cropping etc.) are optional if not exploited for loopholes.

EDIT: The incorrect A rhomb substitution has been fixed. Apologies to anoyone who has started working on a solution.

Consider the following substitutions, where the substituted rhomb(us) is scaled up and shown in red:

A rhomb (144°, 36°)

... becomes ...

B rhomb (108°, 72°)

... becomes ...

Each substitution is made up of some combination of A rhombs and B rhombs, on which the same substitutions can be performed.

A tiling can be created by repeating the substitutions n times.

After n=2 substitutions of A rhomb:

In the fewest bytes of code (given input n>=0) draw the tiling after n substitutions, where n=0 is A rhomb

Notes:

• Substitutions are tiled without leaving gaps or overlapping.
• The red lines shouldn't be included, they only illustrate the substitution.
• In each substitution the tiling is scaled up so the rhombs have a constant size.
• Any rotation is optional.
• Graphical choices (colour, dimensions, cropping etc.) are optional if not exploited for loopholes.

EDIT: The incorrect A rhomb substitution has been fixed. Apologies to anoyone who had started working on a solution.

Consider the following substitutions, where the substituted rhomb(us) is scaled up and shown in red:

EDIT: Note the anchor points (circle) created where a corner of each new rhomb touches the substituted rhomb. Also note the substitution's anchor point (black circle).

A rhomb (144°, 36°)

... becomes ...

B rhomb (108°, 72°)

... becomes ...

Each substitution is made up of some combination of A rhombs and B rhombs, on which the same substitutions can be performed.

A tiling can be created by repeating the substitutions n times.

After n=2 substitutions of A rhomb:

EDIT: The substitution is oriented by aligning the rhomb's anchor point with the substitution's anchor point

In the fewest bytes of code (given input n>=0) draw the tiling after n substitutions, where n=0 is A rhomb

Notes:

• The red lines and anchor points shouldn't be included, they only illustrate the substitution.
• In each substitution the tiling is scaled up so the rhombs have a constant size.
• Any rotation is optional.
• Graphical choices (colour, dimensions, cropping etc.) are optional if not exploited for loopholes.

Consider the following substitutions, where the substituted rhomb(us) is scaled up and shown in red:

A rhomb (144°, 36°)

... becomes ...

B rhomb (108°, 72°)

 ... becomes ...

Each substitution is made up of some combination of A rhombs and B rhombs, on which the same substitutions can be performed.

A tiling can be created by repeating the substitutions n times.

After n=2 substitutions of A rhomb:

In the fewest bytes of code (given input n>=0) draw the tiling after n substitutions, where n=0 is A rhomb

Notes:

• Substitutions are tiled without leaving gaps or overlapping.
• The red lines shouldn't be included, they only illustrate the substitution.
• In each substitution the tiling is scaled up so the rhombs have a constant size.
• Any rotation is optional.
• Graphical choices (colour, dimensions, cropping etc.) are optional if not exploited for loopholes.

EDIT: The incorrect A rhomb substitution has been fixed. Apologies to anoyone who has started working on a solution.

Consider the following substitutions, where the substituted rhomb(us) is scaled up and shown in red:

A rhomb (144°, 36°)

... becomes ...

B rhomb (108°, 72°)

  ... becomes ...

Each substitution is made up of some combination of A rhombs and B rhombs, on which the same substitutions can be performed.

A tiling can be created by repeating the substitutions n times.

After n=2 substitutions of A rhomb:

In the fewest bytes of code (given input n>=0) draw the tiling after n substitutions, where n=0 is A rhomb

Notes:

• Substitutions are tiled without leaving gaps or overlapping.
• The red lines shouldn't be included, they only illustrate the substitution.
• In each substitution the tiling is scaled up so the rhombs have a constant size.
• Any rotation is optional.
• Graphical choices (colour, dimensions, cropping etc.) are optional if not exploited for loopholes.