The generator matrix

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

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

Homogenous weight enumerator: w(x)=1x^0+81x^28+98x^29+272x^30+420x^31+789x^32+1148x^33+1829x^34+2502x^35+3208x^36+3960x^37+3940x^38+4052x^39+3317x^40+2588x^41+1903x^42+1144x^43+721x^44+390x^45+216x^46+72x^47+68x^48+8x^49+27x^50+2x^51+6x^52+4x^54+1x^56+1x^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 19.6 seconds.