The generator matrix

 1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  4  1  1  1  1  1  4  1  1  1  1  0  1  4
 0  2  0  2  0  0  2  2  0  0  6  6  0  0  6  6  0  0  2  6  0  2  4  2  2  4  4  6  2  0  4  2  4  2  0  6  4  6  2  4  2  4  2  0  6  4  6  0  4  2  0  2  4  0  4  4  6  4  0  2  0  6  4  6  6  4  2  0
 0  0  2  2  0  6  2  0  6  0  6  0  0  2  6  0  0  6  2  0  4  6  6  4  2  2  0  0  2  4  6  4  2  2  4  4  2  2  4  0  0  4  6  2  0  2  6  4  6  2  0  6  0  2  0  6  4  4  2  4  4  2  4  6  0  0  4  4
 0  0  0  4  0  0  4  0  0  0  4  0  0  0  4  0  4  4  0  4  4  0  4  4  0  4  4  4  0  4  4  4  0  4  0  4  0  4  0  0  0  0  4  0  4  4  0  4  0  4  4  0  4  4  0  4  0  4  4  0  0  0  0  0  4  0  4  0
 0  0  0  0  4  0  4  4  4  0  4  0  4  4  0  4  4  4  0  4  0  4  0  0  0  4  0  0  4  4  0  4  0  4  0  4  4  0  0  4  0  0  4  0  4  4  4  0  4  0  4  0  0  0  0  4  4  4  0  4  0  4  4  0  0  0  0  0
 0  0  0  0  0  4  0  0  4  4  4  4  4  0  4  4  0  0  4  0  0  4  0  0  0  4  4  4  0  4  4  4  0  4  4  0  4  0  0  4  4  0  0  4  4  0  0  4  0  4  4  0  0  0  0  4  0  0  4  4  0  4  0  4  0  0  4  0

generates a code of length 68 over Z8 who´s minimum homogenous weight is 64.

Homogenous weight enumerator: w(x)=1x^0+254x^64+256x^66+96x^68+256x^70+96x^72+32x^76+32x^80+1x^128

The gray image is a code over GF(2) with n=272, k=10 and d=128.
This code was found by Heurico 1.16 in 32 seconds.