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  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  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  4  0  4  4  0  0  4  4  4  4  0  4  4  0  4  4  0  4  4  0  4  4  0  4  4  4  0  4  0  4  0  4  4  0  4  0  4  0  0  4  4  4  4  4  4  4  0  0  0  0  0  0  0  4  4  0  4
 0  0  4  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  4  4  4  0  4  4  4  4  0  0  4  4  0  4  4  0  4  4  0  4  4  0  4  0  4  0  4  4  4  0  4  4  0  4  4  4  0  4  4  0  4  4  4  4  0  0  0  0  0  0  0  0  4  4  0  4  4
 0  0  0  4  0  0  0  0  0  0  0  4  4  4  4  4  4  4  0  4  4  4  4  0  0  4  4  0  4  0  4  4  0  4  4  0  0  4  4  0  4  4  4  0  0  4  4  4  0  0  0  0  0  0  4  0  0  0  0  4  4  4  4  0  0  0  0  0  4  4  4  0  4  4  4
 0  0  0  0  4  0  0  0  4  4  4  4  4  0  4  4  0  0  0  0  0  0  0  0  0  0  0  0  0  4  4  0  4  4  4  0  4  4  0  4  4  0  4  4  0  4  4  4  0  4  0  4  0  4  0  4  4  4  4  4  4  0  4  0  0  0  0  4  4  0  0  0  0  4  4
 0  0  0  0  0  4  0  4  4  4  0  0  0  0  4  4  4  4  0  0  0  0  0  0  0  0  0  0  4  4  0  4  4  0  4  4  0  4  4  0  0  4  0  4  4  4  0  4  4  0  4  0  4  0  4  4  4  4  0  0  4  4  4  4  0  0  4  4  0  0  0  0  4  4  0
 0  0  0  0  0  0  4  4  0  4  4  0  4  4  4  0  0  4  0  0  0  0  4  4  4  4  4  4  4  0  4  0  4  0  0  4  0  4  0  4  4  4  0  4  4  0  0  0  0  0  0  0  0  4  0  4  0  0  4  4  4  4  4  4  0  4  4  0  0  0  0  0  0  0  4

generates a code of length 75 over Z8 who´s minimum homogenous weight is 70.

Homogenous weight enumerator: w(x)=1x^0+13x^70+26x^72+24x^74+384x^75+24x^76+26x^78+13x^80+1x^150

The gray image is a code over GF(2) with n=300, k=9 and d=140.
This code was found by Heurico 1.16 in 0.158 seconds.