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

generates a code of length 76 over Z8 who´s minimum homogenous weight is 72.

Homogenous weight enumerator: w(x)=1x^0+38x^72+32x^74+372x^76+32x^78+33x^80+3x^84+1x^148

The gray image is a code over GF(2) with n=304, k=9 and d=144.
This code was found by Heurico 1.16 in 0.209 seconds.