The generator matrix

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

generates a code of length 71 over GR(16,4) who´s minimum homogenous weight is 201.

Homogenous weight enumerator: w(x)=1x^0+384x^201+564x^202+276x^203+39x^204+1272x^205+1332x^206+576x^207+51x^208+1380x^209+1512x^210+384x^211+45x^212+1188x^213+1272x^214+444x^215+69x^216+1200x^217+960x^218+276x^219+24x^220+816x^221+720x^222+168x^223+12x^224+468x^225+468x^226+120x^227+6x^228+180x^229+84x^230+60x^231+3x^232+24x^233+3x^236+3x^260

The gray image is a code over GF(4) with n=284, k=7 and d=201.
This code was found by Heurico 1.16 in 1.31 seconds.