The generator matrix

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

generates a code of length 26 over Z16 who´s minimum homogenous weight is 20.

Homogenous weight enumerator: w(x)=1x^0+273x^20+1528x^21+5253x^22+13536x^23+30574x^24+49712x^25+59712x^26+50498x^27+31037x^28+13296x^29+4885x^30+1388x^31+349x^32+88x^33+6x^34+2x^35+4x^36+2x^40

The gray image is a code over GF(2) with n=208, k=18 and d=80.
This code was found by Heurico 1.16 in 179 seconds.