The generator matrix

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

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

Homogenous weight enumerator: w(x)=1x^0+190x^18+664x^19+1473x^20+3336x^21+6484x^22+8384x^23+6661x^24+3360x^25+1368x^26+616x^27+179x^28+24x^29+20x^30+6x^32+2x^34

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 3.18 seconds.