The generator matrix

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

generates a code of length 37 over Z16 who´s minimum homogenous weight is 30.

Homogenous weight enumerator: w(x)=1x^0+192x^30+1058x^31+3861x^32+8462x^33+17860x^34+30618x^35+43402x^36+49656x^37+45343x^38+31172x^39+17880x^40+7806x^41+3161x^42+1178x^43+354x^44+92x^45+33x^46+6x^47+6x^48+3x^50

The gray image is a code over GF(2) with n=296, k=18 and d=120.
This code was found by Heurico 1.16 in 298 seconds.