The generator matrix

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

generates a code of length 91 over Z16 who´s minimum homogenous weight is 80.

Homogenous weight enumerator: w(x)=1x^0+145x^80+64x^81+478x^82+352x^83+1107x^84+1492x^85+2427x^86+4128x^87+4696x^88+6956x^89+6629x^90+8644x^91+6717x^92+7380x^93+4586x^94+3876x^95+2203x^96+1476x^97+967x^98+396x^99+384x^100+40x^101+213x^102+12x^103+70x^104+49x^106+31x^108+6x^110+5x^112+5x^114+1x^116

The gray image is a code over GF(2) with n=728, k=16 and d=320.
This code was found by Heurico 1.16 in 84.3 seconds.