The generator matrix

 1  0  0  0  1  1  1 10 14  1  1  2 12  1  8 10  1  1  4  1  1  1  1
 0  1  0  0  4  9 13  1  1 14  2  1 14  1  1  0 15  6  1  6  4  0  8
 0  0  1  0  5  1  4  5  8  2 13  7  1 10  3  1  7  0  6 15  3 10 12
 0  0  0  1  1  4  5  5 11  5  2  0  7 14 10  3 11  8 11  4  2 12  4

generates a code of length 23 over Z16 who´s minimum homogenous weight is 18.

Homogenous weight enumerator: w(x)=1x^0+152x^18+1214x^19+3176x^20+7086x^21+13469x^22+15130x^23+13823x^24+7172x^25+2962x^26+1092x^27+198x^28+46x^29+9x^30+2x^31+2x^32+2x^35

The gray image is a code over GF(2) with n=184, k=16 and d=72.
This code was found by Heurico 1.16 in 10.7 seconds.