The generator matrix

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

generates a code of length 20 over Z16 who´s minimum homogenous weight is 18.

Homogenous weight enumerator: w(x)=1x^0+76x^18+64x^19+229x^20+64x^21+76x^22+1x^24+1x^36

The gray image is a code over GF(2) with n=160, k=9 and d=72.
This code was found by Heurico 1.16 in 0.00448 seconds.