The generator matrix

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

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

Homogenous weight enumerator: w(x)=1x^0+106x^18+518x^19+1635x^20+3574x^21+6500x^22+8002x^23+6763x^24+3492x^25+1498x^26+514x^27+129x^28+22x^29+8x^30+6x^31

The gray image is a code over GF(2) with n=184, k=15 and d=72.
This code was found by Heurico 1.16 in 3.22 seconds.