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

generates a code of length 71 over GR(16,4) who´s minimum homogenous weight is 205.

Homogenous weight enumerator: w(x)=1x^0+120x^205+348x^206+420x^207+162x^208+420x^209+408x^210+468x^211+141x^212+144x^213+228x^214+120x^215+42x^216+24x^217+96x^218+156x^219+63x^220+156x^221+168x^222+72x^223+12x^224+60x^225+48x^226+96x^227+24x^228+36x^229+48x^230+12x^231+3x^248

The gray image is a code over GF(4) with n=284, k=6 and d=205.
This code was found by Heurico 1.16 in 0.125 seconds.