The generator matrix

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

generates a code of length 25 over Z16 who´s minimum homogenous weight is 18.

Homogenous weight enumerator: w(x)=1x^0+128x^18+96x^19+579x^20+1144x^21+3381x^22+7456x^23+11240x^24+17432x^25+11309x^26+7456x^27+3426x^28+1128x^29+522x^30+96x^31+111x^32+8x^33+18x^34+3x^36+1x^38+1x^42

The gray image is a code over GF(2) with n=200, k=16 and d=72.
This code was found by Heurico 1.16 in 11.2 seconds.