The generator matrix

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

generates a code of length 57 over Z8 who´s minimum homogenous weight is 50.

Homogenous weight enumerator: w(x)=1x^0+125x^50+344x^51+530x^52+604x^53+777x^54+684x^55+835x^56+690x^57+765x^58+644x^59+657x^60+492x^61+404x^62+262x^63+201x^64+98x^65+32x^66+16x^67+15x^68+4x^69+9x^70+2x^71+1x^72

The gray image is a code over GF(2) with n=228, k=13 and d=100.
This code was found by Heurico 1.16 in 1.74 seconds.