The generator matrix

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

generates a code of length 21 over Z16 who´s minimum homogenous weight is 17.

Homogenous weight enumerator: w(x)=1x^0+106x^17+446x^18+980x^19+1407x^20+2342x^21+1460x^22+932x^23+347x^24+106x^25+46x^26+8x^27+5x^28+6x^29

The gray image is a code over GF(2) with n=168, k=13 and d=68.
This code was found by Heurico 1.16 in 0.23 seconds.