The generator matrix

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

generates a code of length 63 over Z8 who´s minimum homogenous weight is 56.

Homogenous weight enumerator: w(x)=1x^0+158x^56+344x^57+638x^58+628x^59+738x^60+684x^61+760x^62+672x^63+683x^64+628x^65+592x^66+480x^67+445x^68+268x^69+242x^70+104x^71+63x^72+28x^73+22x^74+4x^75+5x^76+2x^78+3x^80

The gray image is a code over GF(2) with n=252, k=13 and d=112.
This code was found by Heurico 1.11 in 1.21 seconds.