The generator matrix

 1  0  0  1  1  1  1  1  1  1  1  1  1  1  2  1  1  1  1 2a+2 2a  1  1  1  1 2a  1  1  1  1 2a+2  1  0  1  1  1  1  1  1  1 2a+2  1  0  1  2  2  1  1  1  1  0  1 2a  1 2a+2  1  1  1 2a  1  1  1  1  2  1  1  1  1  1  2 2a+2  0  1  1  1  1  1  1  1  1  1  1  1  1  1 2a  1  1  1  1  1  1  1  1  1  1
 0  1  0 2a+2 2a  2  1 3a+2 3a+3 2a+3 2a+1  3  a a+3  1 3a a+2 3a+1 a+1  1  1  0  1  a 3a+3  1 2a  2 a+3 2a+3  1 a+2  1  3 2a+1 3a 2a+2 3a+1  a a+1  1 3a+2  1  2  1  1 3a 3a+2 a+2  0  1 2a  1 2a+2  1  a  2  0  1 2a+2 3a a+2  a  1 3a+2 3a+3 3a+1 2a a+3  1  1  1  2 3a+2 3a 3a+1 a+3 3a+1 a+1 3a 2a 3a+3 3a+2  1 2a+1  1  1 a+1 3a a+2 a+1 a+3  3 a+1  0  2
 0  0  1  1  a 3a+3 3a+1 a+1 a+3 a+2 2a+1  2 2a+2 2a a+1  3 3a+2 3a 2a+3 2a+1 3a  2 3a+3  0 3a+1 3a+2 3a+2 a+3 2a+2  a a+3 a+2 3a+2 2a  1 2a+1  3  a a+2 2a+1  3 a+3 2a 2a+3 3a a+3 3a+2 2a 3a+1  a  3 3a+3 2a+1 3a+2 a+1  3  1 a+1  1 3a 2a+2 a+3  a 2a+2 2a+1 a+2 2a a+1 3a+3 3a+1  0 a+2  0 2a+3  a 3a+2  1 3a+3 a+2 3a+1  2 2a+1  0 2a+2  a a+1 3a+2 3a a+1 2a+1  0 a+3  3 a+1 a+3 3a+3

generates a code of length 96 over GR(16,4) who´s minimum homogenous weight is 280.

Homogenous weight enumerator: w(x)=1x^0+177x^280+552x^281+180x^282+108x^283+420x^284+636x^285+204x^286+24x^287+303x^288+384x^289+120x^290+24x^291+87x^292+252x^293+12x^294+12x^295+84x^296+96x^297+12x^298+66x^300+72x^301+12x^302+12x^303+39x^304+48x^305+12x^307+12x^308+72x^309+12x^310+24x^312+24x^314+3x^332

The gray image is a code over GF(4) with n=384, k=6 and d=280.
This code was found by Heurico 1.16 in 0.25 seconds.