The generator matrix

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

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

Homogenous weight enumerator: w(x)=1x^0+248x^36+444x^37+621x^38+698x^39+842x^40+738x^41+931x^42+934x^43+888x^44+638x^45+583x^46+296x^47+173x^48+64x^49+53x^50+22x^51+8x^52+2x^53+4x^54+2x^55+2x^57

The gray image is a code over GF(2) with n=168, k=13 and d=72.
This code was found by Heurico 1.11 in 0.723 seconds.