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  3  3  1
 0  3  0  0  0  3  3  3 3a 6a+3  0  3 3a 6a+6 6a  6 6a+6  6 3a+6 6a 3a 3a+6  3  3  0
 0  0  3  0  0 3a+6 6a+6 3a  6 3a+6  3 3a+6 3a 3a+3  3 3a+6  3 3a+3  6 3a 3a+6 3a  0  0  3
 0  0  0  3  0 3a+6  3 3a+3 3a+3 6a+6 6a+3 6a+6 6a+3 6a  3  3 6a  3 3a+3 3a+3 6a+3  6 6a+6  3  3
 0  0  0  0  3 6a+6  6 6a+3  3  3 3a 3a  3 3a+3  0  6 6a 3a  3  0 6a+3 6a+3 6a+6 3a 3a+6

generates a code of length 25 over GR(81,9) who´s minimum homogenous weight is 162.

Homogenous weight enumerator: w(x)=1x^0+752x^162+3016x^171+4848x^180+5832x^184+8856x^189+93312x^193+13456x^198+373248x^202+15384x^207+9840x^216+2896x^225

The gray image is a code over GF(9) with n=225, k=6 and d=162.
This code was found by Heurico 1.16 in 31.7 seconds.