The generator matrix

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

generates a code of length 42 over Z8 who´s minimum homogenous weight is 38.

Homogenous weight enumerator: w(x)=1x^0+346x^38+546x^40+466x^42+334x^44+204x^46+105x^48+34x^50+6x^52+6x^54

The gray image is a code over GF(2) with n=168, k=11 and d=76.
This code was found by Heurico 1.16 in 8.63 seconds.