The generator matrix

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

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

Homogenous weight enumerator: w(x)=1x^0+96x^34+220x^35+389x^36+648x^37+1181x^38+1092x^39+1832x^40+1622x^41+2309x^42+1596x^43+1818x^44+1238x^45+1014x^46+508x^47+422x^48+194x^49+130x^50+40x^51+17x^52+10x^53+5x^54+1x^58+1x^64

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.