The generator matrix

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

generates a code of length 63 over Z8 who´s minimum homogenous weight is 52.

Homogenous weight enumerator: w(x)=1x^0+77x^52+124x^53+346x^54+528x^55+879x^56+1106x^57+1509x^58+2010x^59+2369x^60+2736x^61+2994x^62+3378x^63+3021x^64+2806x^65+2473x^66+2018x^67+1546x^68+1022x^69+724x^70+466x^71+257x^72+128x^73+133x^74+44x^75+31x^76+14x^77+8x^78+4x^79+10x^80+5x^82+1x^84

The gray image is a code over GF(2) with n=252, k=15 and d=104.
This code was found by Heurico 1.16 in 35.3 seconds.