The generator matrix

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

generates a code of length 70 over GR(16,4) who´s minimum homogenous weight is 190.

Homogenous weight enumerator: w(x)=1x^0+372x^190+648x^191+789x^192+1236x^193+2424x^194+2256x^195+2637x^196+3276x^197+5124x^198+5100x^199+4440x^200+5400x^201+9456x^202+8400x^203+7356x^204+8244x^205+15324x^206+12492x^207+9942x^208+10896x^209+17508x^210+14244x^211+11421x^212+11784x^213+17772x^214+12660x^215+9645x^216+8856x^217+11784x^218+8616x^219+5280x^220+4356x^221+5232x^222+2604x^223+1497x^224+1164x^225+972x^226+564x^227+159x^228+84x^229+48x^230+21x^232+12x^236+15x^240+15x^244+18x^248

The gray image is a code over GF(4) with n=280, k=9 and d=190.
This code was found by Heurico 1.16 in 256 seconds.