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

generates a code of length 65 over GR(16,4) who´s minimum homogenous weight is 188.

Homogenous weight enumerator: w(x)=1x^0+840x^188+1446x^192+732x^196+468x^200+276x^204+210x^208+120x^212+3x^224

The gray image is a code over GF(4) with n=260, k=6 and d=188.
This code was found by Heurico 1.16 in 1.64 seconds.