The generator matrix

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

generates a code of length 42 over Z8 who´s minimum homogenous weight is 36.

Homogenous weight enumerator: w(x)=1x^0+340x^36+320x^37+672x^38+428x^39+1027x^40+832x^41+1124x^42+684x^43+980x^44+576x^45+644x^46+164x^47+247x^48+64x^49+44x^50+4x^51+24x^52+12x^54+5x^56

The gray image is a code over GF(2) with n=168, k=13 and d=72.
This code was found by Heurico 1.16 in 64.9 seconds.