The generator matrix

 1  1  1  1  1  1  1  1  1  1  2  2  2  1  0  8  1 12  2  0  2  1 12  1
 0  2  0  2  0  4  6  6 14  4 12  2  6  4 12  2  2  2 14  2 12 12  2 14
 0  0  2  2  0  2 10  0  8  6 10  6  0  4  2 12  2  6  6  0 12 14 14 10
 0  0  0  4  0  0  4  0  0  8  0  0  8  8 12 12 12 12 12 12 12  4  0  8
 0  0  0  0 12  0  0  8 12 12  8 12  0  0  8  4  4  4  8  4  0 12  0  4
 0  0  0  0  0  8  8  8  0  0  8  0  8  8  8  0  0  8  8  8  0  8  8  8

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

Homogenous weight enumerator: w(x)=1x^0+248x^18+284x^19+1039x^20+1816x^21+3656x^22+5580x^23+7401x^24+5584x^25+3902x^26+1844x^27+957x^28+216x^29+156x^30+36x^31+38x^32+6x^34+4x^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 55.9 seconds.