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

generates a code of length 71 over Z8 who´s minimum homogenous weight is 64.

Homogenous weight enumerator: w(x)=1x^0+131x^64+4x^65+194x^66+56x^67+245x^68+140x^69+234x^70+128x^71+270x^72+108x^73+172x^74+72x^75+119x^76+4x^77+76x^78+49x^80+26x^82+15x^84+2x^86+1x^88+1x^116

The gray image is a code over GF(2) with n=284, k=11 and d=128.
This code was found by Heurico 1.16 in 0.425 seconds.