The generator matrix

 1  0  1  1  1  6  1  1  0  6  1  1  8  1  1  8  1 14  1  1  2  2  1  0
 0  1 11  6  1  1  8 11  1  1  6 13  1  3  0  1 14  1 11 15 10  1 10  1
 0  0 12  0  0  0  0  0  0  8  8 12  0  4  4 12  8  8 12 12  4  4  8 12
 0  0  0 12  0  0 12  8  4 12  8  8  0  4  0  8  0 12 12  8 12  4 12  8
 0  0  0  0  4  0  8  4  4  4  8  8  4  0  4  0 12  8 12  4  8 12  4  4
 0  0  0  0  0  8  8  8  8  0  8  8  8  8  8  8  0  0  0  0  8  0  0  0

generates a code of length 24 over Z16 who´s minimum homogenous weight is 18.

Homogenous weight enumerator: w(x)=1x^0+156x^18+92x^19+659x^20+1312x^21+3237x^22+7276x^23+7256x^24+7328x^25+3287x^26+1332x^27+592x^28+64x^29+131x^30+4x^31+35x^32+5x^34+1x^36

The gray image is a code over GF(2) with n=192, k=15 and d=72.
This code was found by Heurico 1.16 in 3.56 seconds.