Your task: generate a Koch snowflake to the nth depth. You do not need to make a complete Koch snowflake, just one side of the starting triangle. Wikipedia on Koch flakes: https://en.wikipedia.org/wiki/Koch_snowflake.

Rules:

• The program must generate one side of the Koch snowflake to the nth depth.
• Output may be ASCII or graphical.
• You may generate the whole snowflake; this is not required.
• Standard rules for input/output and loopholes and stuff apply.
• Whitespace does not matter, as long as it all characters are in the right place. (ASCII)
• Shortest code wins!

Test cases:

n=0: ASCII: _, Graphical:

n=1: ASCII: _/\_, Graphical:

n=2: ASCII:

    _/\_
    \  /
_/\_/  \_/\_

Graphical:

n=3: ASCII:

               _/\_
               \  /
           _/\_/  \_/\_
           \          /
           /_        _\
             \      /
    _/\_    _/      \_    _/\_
    \  /    \        /    \  /
_/\_/  \_/\_/        \_/\_/  \_/\_

Graphical:

I hope this makes sense.