The generator matrix

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

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

Homogenous weight enumerator: w(x)=1x^0+120x^48+452x^49+823x^50+1188x^51+1713x^52+2166x^53+2453x^54+2814x^55+2992x^56+3250x^57+3116x^58+2856x^59+2710x^60+2032x^61+1622x^62+1074x^63+613x^64+432x^65+165x^66+90x^67+37x^68+18x^69+9x^70+8x^71+6x^72+2x^73+4x^74+2x^75

The gray image is a code over GF(2) with n=228, k=15 and d=96.
This code was found by Heurico 1.11 in 12.3 seconds.