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

generates a code of length 90 over GR(16,4) who´s minimum homogenous weight is 262.

Homogenous weight enumerator: w(x)=1x^0+360x^262+360x^263+165x^264+156x^265+564x^266+336x^267+234x^268+108x^269+408x^270+144x^271+102x^272+60x^273+276x^274+84x^275+51x^276+36x^277+120x^278+108x^279+45x^280+84x^282+48x^283+24x^284+12x^285+36x^286+36x^287+15x^288+60x^290+36x^291+12x^293+12x^294+3x^324

The gray image is a code over GF(4) with n=360, k=6 and d=262.
This code was found by Heurico 1.16 in 0.234 seconds.