The generator matrix

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

generates a code of length 23 over Z16 who´s minimum homogenous weight is 20.

Homogenous weight enumerator: w(x)=1x^0+635x^20+952x^21+1512x^22+1980x^23+1661x^24+868x^25+472x^26+36x^27+69x^28+4x^29+2x^32

The gray image is a code over GF(2) with n=184, k=13 and d=80.
This code was found by Heurico 1.16 in 1.34 seconds.