The generator matrix

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

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

Homogenous weight enumerator: w(x)=1x^0+201x^36+428x^37+636x^38+792x^39+837x^40+864x^41+838x^42+886x^43+767x^44+696x^45+556x^46+326x^47+202x^48+88x^49+46x^50+10x^51+8x^52+4x^53+4x^54+2x^55

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 1.21 seconds.