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

generates a code of length 64 over Z8 who´s minimum homogenous weight is 58.

Homogenous weight enumerator: w(x)=1x^0+58x^58+130x^60+52x^61+149x^62+84x^63+147x^64+72x^65+125x^66+40x^67+72x^68+4x^69+39x^70+4x^71+28x^72+13x^74+5x^76+1x^108

The gray image is a code over GF(2) with n=256, k=10 and d=116.
This code was found by Heurico 1.16 in 0.16 seconds.