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

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

Homogenous weight enumerator: w(x)=1x^0+14x^72+32x^73+68x^74+88x^75+96x^76+120x^77+56x^78+8x^79+16x^80+8x^81+4x^82+1x^144

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 0.204 seconds.