The generator matrix

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

generates a code of length 94 over GR(16,4) who´s minimum homogenous weight is 264.

Homogenous weight enumerator: w(x)=1x^0+546x^264+288x^265+372x^266+504x^267+2328x^268+960x^269+600x^270+1200x^271+3678x^272+1752x^273+612x^274+1788x^275+4641x^276+1668x^277+960x^278+1920x^279+5982x^280+2016x^281+1044x^282+2484x^283+6402x^284+1920x^285+1008x^286+2112x^287+5283x^288+1716x^289+612x^290+1284x^291+3402x^292+1188x^293+624x^294+672x^295+1719x^296+552x^297+216x^298+276x^299+636x^300+216x^301+72x^302+48x^303+108x^304+12x^305+24x^306+33x^308+18x^312+24x^316+6x^320+3x^328+6x^332

The gray image is a code over GF(4) with n=376, k=8 and d=264.
This code was found by Heurico 1.16 in 29.6 seconds.