The generator matrix

 1  0  1  1  1  6  1  1 12  1  1 10  1  1  8  1  1 14  1  1  1  1  4  2  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1
 0  1  3  6  5  1 12 15  1 10  9  1  8 11  1 14 13  1  4  7  2  1  1  1  0  6  8 14 12 10  4  2  3 11  5 13 15  7  9  1

generates a code of length 40 over Z16 who´s minimum homogenous weight is 40.

Homogenous weight enumerator: w(x)=1x^0+252x^40+2x^48+1x^64

The gray image is a code over GF(2) with n=320, k=8 and d=160.
This code was found by Heurico 1.16 in 0.0178 seconds.