The generator matrix

 1  0  1  1  1  4  1  1  0  1  1  2  1  1  2  0  1  1
 0  1  1  6  3  1  2  7  1  2  4  1  5  2  6  0  6  4
 0  0  2  0  4  2  6  2  0  6  6  2  4  2  6  2  6  2
 0  0  0  4  4  4  0  4  4  4  4  4  4  4  0  4  4  0

generates a code of length 18 over Z8 who´s minimum homogenous weight is 16.

Homogenous weight enumerator: w(x)=1x^0+201x^16+160x^18+104x^20+32x^22+14x^24

The gray image is a code over GF(2) with n=72, k=9 and d=32.
This code was found by Heurico 1.16 in 2.32 seconds.