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

generates a code of length 70 over GR(16,4) who´s minimum homogenous weight is 203.

Homogenous weight enumerator: w(x)=1x^0+684x^203+324x^204+1032x^207+327x^208+540x^211+162x^212+312x^215+60x^216+276x^219+60x^220+144x^223+36x^224+84x^227+51x^228+3x^244

The gray image is a code over GF(4) with n=280, k=6 and d=203.
This code was found by Heurico 1.16 in 0.641 seconds.