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

generates a code of length 74 over Z8 who´s minimum homogenous weight is 64.

Homogenous weight enumerator: w(x)=1x^0+145x^64+8x^65+396x^66+80x^67+564x^68+144x^69+708x^70+352x^71+932x^72+440x^73+940x^74+440x^75+780x^76+352x^77+602x^78+144x^79+481x^80+80x^81+266x^82+8x^83+180x^84+82x^86+47x^88+14x^90+4x^92+1x^96+1x^104

The gray image is a code over GF(2) with n=296, k=13 and d=128.
This code was found by Heurico 1.16 in 5.36 seconds.