The generator matrix

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

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

Homogenous weight enumerator: w(x)=1x^0+78x^18+252x^19+511x^20+1720x^21+3239x^22+6956x^23+7154x^24+7088x^25+3315x^26+1652x^27+480x^28+216x^29+53x^30+36x^31+13x^32+3x^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 3.14 seconds.