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  X  X  1  1  1  X  X  1  1  1  1  X  X  X  1  1  X  X  X  6  6  0  X  1  1  X  X  X  6  X  1
 0  6  3  0  6  3  0  6  3  0  6  3  0  6  3  0  6  3  0  6  3  0  6  3  0  6  3  0  6  3  0  6  3  6  3  0  6  3  6  3  0  6  3  0  6  3  0  6  3  0  6  3  6  3  6  0  0  6  0  6  3  0  0  3

generates a code of length 64 over Z9[X]/(X^2+3,3X) who´s minimum homogenous weight is 129.

Homogenous weight enumerator: w(x)=1x^0+72x^129+8x^135

The gray image is a code over GF(3) with n=576, k=4 and d=387.
This code was found by Heurico 1.16 in 0.082 seconds.