The generator matrix

 1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  2  2  4  2  2  0  1  1  2  1  4  1  2  1  1  1  1  0  2  0  0  2  1  1
 0  2  0  2  0  0  2  6  0  4  2  6  0  4  2  6  4  2  2  6  6  0  6  4  4  2  2  0  0  0  6  2  6  2  2  0  4  4  2  0
 0  0  2  2  0  6  2  0  0  2  2  4  4  2  6  0  2  2  6  0  0  2  0  6  2  2  2  0  6  0  4  0  6  4  6  2  2  2  2  0
 0  0  0  4  0  0  0  0  0  0  0  0  0  0  4  0  4  4  4  4  4  0  4  4  0  4  0  4  4  0  0  4  0  4  4  4  4  4  4  0
 0  0  0  0  4  0  0  0  0  0  0  4  0  4  4  4  4  4  0  4  0  0  4  0  4  4  4  0  4  4  4  4  4  0  0  0  4  0  4  0
 0  0  0  0  0  4  0  0  0  4  0  0  0  0  0  4  4  0  0  0  0  4  4  4  0  4  4  0  4  4  4  0  0  0  4  4  0  0  4  0
 0  0  0  0  0  0  4  0  0  0  4  0  0  0  0  4  4  4  4  0  0  4  4  0  4  4  4  4  0  0  0  0  0  4  4  0  0  4  4  0
 0  0  0  0  0  0  0  4  0  4  4  0  4  0  0  4  0  4  0  0  4  0  4  4  4  0  0  4  0  0  4  4  4  0  0  0  0  0  4  4
 0  0  0  0  0  0  0  0  4  0  0  0  4  0  0  4  4  0  0  4  4  4  4  0  4  0  0  0  0  4  4  0  4  4  4  0  4  0  0  0

generates a code of length 40 over Z8 who´s minimum homogenous weight is 30.

Homogenous weight enumerator: w(x)=1x^0+25x^30+46x^31+94x^32+146x^33+237x^34+332x^35+474x^36+612x^37+722x^38+888x^39+976x^40+936x^41+808x^42+644x^43+421x^44+316x^45+209x^46+122x^47+63x^48+38x^49+41x^50+16x^51+16x^52+4x^54+2x^56+2x^58+1x^60

The gray image is a code over GF(2) with n=160, k=13 and d=60.
This code was found by Heurico 1.16 in 2.16 seconds.