The generator matrix

 1  1  1  1  1  1  1  1  2  2  2  2  2  2  2  2  1  1  2  1
 0 12  0 12  8  4  8  4 12 12  0  8  4  4  0  8  0 12 12  0
 0  0  8  8  8  8  0  0  0  8  8  8  8  0  0  0  0  0  8  0

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

Homogenous weight enumerator: w(x)=1x^0+6x^18+16x^19+82x^20+14x^21+6x^22+1x^24+2x^29

The gray image is a code over GF(2) with n=160, k=7 and d=72.
This code was found by Heurico 1.16 in 0.00415 seconds.