The generator matrix

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

generates a code of length 71 over Z8 who´s minimum homogenous weight is 63.

Homogenous weight enumerator: w(x)=1x^0+64x^63+238x^64+430x^65+545x^66+564x^67+604x^68+722x^69+728x^70+694x^71+729x^72+654x^73+511x^74+464x^75+410x^76+318x^77+227x^78+114x^79+59x^80+44x^81+29x^82+18x^83+2x^84+8x^85+4x^86+5x^88+3x^90+2x^91+1x^94

The gray image is a code over GF(2) with n=284, k=13 and d=126.
This code was found by Heurico 1.16 in 2.59 seconds.