The generator matrix

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

generates a code of length 30 over GR(64,4) who´s minimum homogenous weight is 197.

Homogenous weight enumerator: w(x)=1x^0+1176x^197+13104x^198+10080x^199+126x^200+1344x^203+7056x^205+43680x^206+20160x^207+273x^208+21504x^210+9408x^211+16856x^213+82992x^214+34272x^215+49x^216+21x^232+42x^240

The gray image is a code over GF(8) with n=240, k=6 and d=197.
This code was found by Heurico 1.16 in 4.8 seconds.