The generator matrix

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

generates a code of length 67 over GR(16,4) who´s minimum homogenous weight is 184.

Homogenous weight enumerator: w(x)=1x^0+195x^184+648x^185+552x^187+993x^188+2196x^189+1644x^191+1926x^192+3900x^193+2784x^195+2649x^196+5328x^197+3936x^199+3171x^200+5976x^201+4152x^203+3159x^204+5760x^205+3516x^207+2469x^208+4668x^209+1632x^211+1305x^212+1776x^213+216x^215+369x^216+456x^217+72x^220+12x^221+24x^224+21x^228+15x^232+6x^236+6x^240+3x^244

The gray image is a code over GF(4) with n=268, k=8 and d=184.
This code was found by Heurico 1.16 in 19.8 seconds.