The generator matrix

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

generates a code of length 69 over Z8 who´s minimum homogenous weight is 64.

Homogenous weight enumerator: w(x)=1x^0+169x^64+176x^65+266x^66+232x^67+301x^68+112x^69+214x^70+92x^71+131x^72+52x^73+88x^74+48x^75+61x^76+40x^77+14x^78+12x^79+23x^80+4x^81+10x^82+2x^84

The gray image is a code over GF(2) with n=276, k=11 and d=128.
This code was found by Heurico 1.16 in 0.272 seconds.