The generator matrix

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

generates a code of length 80 over Z16 who´s minimum homogenous weight is 74.

Homogenous weight enumerator: w(x)=1x^0+149x^74+818x^75+1233x^76+1738x^77+1647x^78+2100x^79+2003x^80+1736x^81+1583x^82+1120x^83+730x^84+682x^85+349x^86+298x^87+80x^88+64x^89+14x^90+14x^91+17x^92+4x^93+2x^95+2x^98

The gray image is a code over GF(2) with n=640, k=14 and d=296.
This code was found by Heurico 1.16 in 3.41 seconds.