added 52 characters in body

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edited Apr 4, 2018 at 19:16

C (gcc), 85 8181 75 bytes

Saved 4 bytes and then 6 bytes thanks to @ceilingcat@ceilingcat's re-ordering of assignments

r[5];f(n){r[1]=(n=(n-(*r=n*n*n))/6+1)*n*n--;r[2]=;r[3]=r[4]=-n*n*n;r[2]=-n*n*n;r[3]=n=-++n*n*n;r[4]=n;n*n*n;}

C (gcc), 85 81 bytes

Saved 4 bytes thanks to @ceilingcat

r[5];f(n){r[1]=(n=(n-(*r=n*n*n))/6+1)*n*n--;r[2]=--n*n*n;r[3]=n=-++n*n*n;r[4]=n;}

Saved 4 bytes and then 6 bytes thanks to @ceilingcat's re-ordering of assignments

r[5];f(n){r[1]=(n=(n-(*r=n*n*n))/6+1)*n*n--;r[3]=r[4]=-n*n*n;r[2]=--n*n*n;}

added 56 characters in body

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edited Apr 4, 2018 at 17:05

Saved 4 bytes thanks to @ceilingcat

r[5];f(n){*r=n*n*n;r[1]=r[1]=(n=(n-n*n*n(*r=n*n*n))/6+1)*n*n--;r[2]=--n*n*n;r[3]=n=-++n*n*n;r[4]=n;}

r[5];f(n){*r=n*n*n;r[1]=(n=(n-n*n*n)/6+1)*n*n--;r[2]=--n*n*n;r[3]=n=-++n*n*n;r[4]=n;}

Saved 4 bytes thanks to @ceilingcat

r[5];f(n){r[1]=(n=(n-(*r=n*n*n))/6+1)*n*n--;r[2]=--n*n*n;r[3]=n=-++n*n*n;r[4]=n;}

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created Apr 4, 2018 at 14:36

r[5];f(n){*r=n*n*n;r[1]=(n=(n-n*n*n)/6+1)*n*n--;r[2]=--n*n*n;r[3]=n=-++n*n*n;r[4]=n;}