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

generates a code of length 81 over Z9[X]/(X^2+6,3X) who´s minimum homogenous weight is 154.

Homogenous weight enumerator: w(x)=1x^0+150x^154+84x^155+58x^156+168x^157+348x^158+84x^159+1614x^160+324x^161+62x^162+3054x^163+48x^164+30x^165+126x^166+60x^167+6x^168+84x^169+66x^172+30x^173+18x^175+78x^176+30x^178+24x^181+12x^184+2x^237

The gray image is a code over GF(3) with n=729, k=8 and d=462.
This code was found by Heurico 1.16 in 20.2 seconds.