The generator matrix

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

generates a code of length 57 over Z8 who´s minimum homogenous weight is 48.

Homogenous weight enumerator: w(x)=1x^0+54x^48+66x^49+186x^50+210x^51+482x^52+392x^53+796x^54+578x^55+1065x^56+628x^57+1079x^58+542x^59+772x^60+392x^61+427x^62+188x^63+162x^64+42x^65+54x^66+14x^67+16x^68+16x^69+16x^70+2x^71+5x^72+1x^74+2x^75+2x^76+1x^78+1x^80

The gray image is a code over GF(2) with n=228, k=13 and d=96.
This code was found by Heurico 1.16 in 2.56 seconds.