The generator matrix

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

generates a code of length 65 over Z16 who´s minimum homogenous weight is 64.

Homogenous weight enumerator: w(x)=1x^0+230x^64+576x^65+208x^66+8x^68+1x^128

The gray image is a code over GF(2) with n=520, k=10 and d=256.
This code was found by Heurico 1.16 in 9.32 seconds.