The generator matrix

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

generates a code of length 91 over Z8 who´s minimum homogenous weight is 78.

Homogenous weight enumerator: w(x)=1x^0+75x^78+142x^79+268x^80+388x^81+535x^82+780x^83+1021x^84+1334x^85+1580x^86+1766x^87+2200x^88+2490x^89+2593x^90+2604x^91+2609x^92+2452x^93+2113x^94+2006x^95+1520x^96+1176x^97+992x^98+716x^99+452x^100+270x^101+226x^102+146x^103+86x^104+74x^105+53x^106+28x^107+29x^108+8x^109+22x^110+4x^111+5x^112+3x^114+1x^116

The gray image is a code over GF(2) with n=364, k=15 and d=156.
This code was found by Heurico 1.16 in 71 seconds.