The generator matrix

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

generates a code of length 42 over Z8 who´s minimum homogenous weight is 34.

Homogenous weight enumerator: w(x)=1x^0+111x^34+120x^35+506x^36+636x^37+1036x^38+1280x^39+1516x^40+2040x^41+1853x^42+2080x^43+1635x^44+1312x^45+946x^46+608x^47+391x^48+104x^49+139x^50+8x^51+42x^52+4x^53+10x^54+4x^56+1x^58+1x^60

The gray image is a code over GF(2) with n=168, k=14 and d=68.
This code was found by Heurico 1.16 in 5.37 seconds.