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

generates a code of length 71 over Z8 who´s minimum homogenous weight is 64.

Homogenous weight enumerator: w(x)=1x^0+147x^64+16x^65+156x^66+68x^67+238x^68+104x^69+248x^70+124x^71+315x^72+128x^73+158x^74+60x^75+118x^76+8x^77+46x^78+4x^79+64x^80+30x^82+11x^84+2x^86+1x^88+1x^116

The gray image is a code over GF(2) with n=284, k=11 and d=128.
This code was found by Heurico 1.16 in 0.524 seconds.