The generator matrix

 1  1  1  1  1  1  1  1  1  1  1  2  8  1  1  0  1  2
 0  2  0  2  8  0  6  6  4 12  4  2  2  0  4  2 10  4
 0  0  2  2  4  6  6  0 12  8  2  2 10  4 10  0 12 14
 0  0  0  8  8  8  0  8  0  8  0  8  0  0  8  0  8  0

generates a code of length 18 over Z16 who´s minimum homogenous weight is 15.

Homogenous weight enumerator: w(x)=1x^0+120x^15+236x^16+370x^17+634x^18+356x^19+193x^20+100x^21+22x^22+12x^23+1x^24+2x^25+1x^28

The gray image is a code over GF(2) with n=144, k=11 and d=60.
This code was found by Heurico 1.16 in 16.8 seconds.