The generator matrix

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

generates a code of length 73 over GR(16,4) who´s minimum homogenous weight is 204.

Homogenous weight enumerator: w(x)=1x^0+93x^204+12x^207+207x^208+144x^211+162x^212+648x^215+132x^216+1296x^219+108x^220+972x^223+72x^224+39x^228+60x^232+24x^236+42x^240+36x^244+21x^248+15x^252+6x^256+3x^264+3x^276

The gray image is a code over GF(4) with n=292, k=6 and d=204.
This code was found by Heurico 1.16 in 0.265 seconds.