The generator matrix

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

generates a code of length 38 over Z8 who´s minimum homogenous weight is 28.

Homogenous weight enumerator: w(x)=1x^0+240x^28+692x^30+12x^31+1381x^32+260x^33+2384x^34+1212x^35+4695x^36+2580x^37+5714x^38+2660x^39+4677x^40+1228x^41+2650x^42+212x^43+1334x^44+28x^45+536x^46+196x^48+52x^50+19x^52+2x^54+1x^56+2x^58

The gray image is a code over GF(2) with n=152, k=15 and d=56.
This code was found by Heurico 1.16 in 29.4 seconds.