The generator matrix

 1  0  1  1  1  0  1  6  1  1  6  1  1  4  1  0  1  1  1  1  1  4  1  2  0  1  1  6  1  1  1  4  1  1  1  1  1  2  1  4  1  2  1  1  2  1  1  0  6  1  1  1  2  1  2  1  1  0  2  0  1  2  2  6  2  1  1  1  1  1
 0  1  1  0  3  1  2  1  7  2  1  1  4  1  3  1  0  1  6  2  5  1  3  1  1  7  4  1  4  5  0  1  5  7  4  4  4  1  7  1  7  1  3  4  2  4  6  1  1  7  5  7  1  5  6  1  6  1  1  1  2  1  1  1  1  0  6  1  3  4
 0  0  2  0  6  2  0  2  0  2  4  0  2  0  4  6  6  6  2  4  0  6  2  4  4  4  6  2  4  6  2  4  6  2  6  4  4  0  4  6  0  2  6  6  4  0  6  2  0  2  2  4  6  6  2  0  6  4  6  2  6  4  4  6  6  4  6  2  2  2
 0  0  0  2  0  2  2  2  6  0  4  6  4  2  0  0  6  2  2  0  4  4  6  2  0  6  4  4  2  6  2  6  0  6  0  4  2  2  6  2  0  6  4  6  6  4  2  2  4  4  2  4  0  4  0  4  0  4  2  0  4  6  4  0  4  4  6  0  2  0
 0  0  0  0  4  0  4  4  4  4  4  0  0  0  0  0  0  4  4  4  4  4  0  0  4  4  4  4  4  0  4  4  4  4  0  4  0  4  0  0  4  4  0  4  0  0  0  4  0  4  0  0  0  4  0  0  0  0  0  0  0  4  0  4  0  0  4  4  0  0

generates a code of length 70 over Z8 who´s minimum homogenous weight is 64.

Homogenous weight enumerator: w(x)=1x^0+72x^64+152x^65+200x^66+204x^67+214x^68+168x^69+158x^70+196x^71+161x^72+152x^73+116x^74+100x^75+32x^76+40x^77+32x^78+12x^79+13x^80+4x^82+16x^84+2x^86+1x^88+2x^92

The gray image is a code over GF(2) with n=280, k=11 and d=128.
This code was found by Heurico 1.16 in 0.322 seconds.