The generator matrix

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

generates a code of length 71 over Z8 who´s minimum homogenous weight is 67.

Homogenous weight enumerator: w(x)=1x^0+154x^67+79x^68+264x^69+72x^70+134x^71+43x^72+52x^73+24x^74+68x^75+15x^76+60x^77+16x^78+20x^79+2x^80+2x^83+2x^84+4x^85+6x^87+2x^88+4x^89

The gray image is a code over GF(2) with n=284, k=10 and d=134.
This code was found by Heurico 1.16 in 7.68 seconds.