The generator matrix

 1  1  1  1  1  1  1  1  1  1  1  1  X  1  1  X  X  1
 0  X  0 X+3  6  X 2X 2X+3 2X  0 X+3 X+3 2X  3 2X 2X  0  6
 0  0  X 2X+6 2X+3  X  0 X+3 2X+6  6 2X+6 X+3  3 2X+3  6 2X+6 X+3  6
 0  0  0  6  0  3  3  0  6  3  0  0  6  6  6  6  3  6

generates a code of length 18 over Z9[X]/(X^2+3,3X) who´s minimum homogenous weight is 30.

Homogenous weight enumerator: w(x)=1x^0+102x^30+102x^31+306x^32+316x^33+624x^34+756x^35+1820x^36+1080x^37+810x^38+346x^39+96x^40+72x^41+80x^42+42x^43+6x^45+2x^48

The gray image is a code over GF(3) with n=162, k=8 and d=90.
This code was found by Heurico 1.16 in 0.0475 seconds.