The generator matrix

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

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

Homogenous weight enumerator: w(x)=1x^0+161x^64+134x^65+148x^66+76x^67+124x^68+84x^69+70x^70+48x^71+51x^72+30x^73+43x^74+4x^75+18x^76+8x^77+17x^78+5x^80+1x^82+1x^86

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 0.128 seconds.