The generator matrix

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

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

Homogenous weight enumerator: w(x)=1x^0+213x^64+274x^66+216x^68+122x^70+98x^72+42x^74+32x^76+6x^78+14x^80+4x^82+2x^88

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 0.173 seconds.