The generator matrix

 1  0  1  1  1  1  1  1  1  1  1  1  1  1  1  0  1  1  1  0  1  1  1  1  1  1  1  1  1  1  1  1  1  1  3  1  1
 0  1  1  a 7a+7 8a+4 3a+5 8a+5 8a a+5  0 a+5 8a 8a+5 8a+4  1  a 7a+7 8a+5  1 3a+7 8a  0 a+5 7a+7  3 8a+3 3a+5 3a+7 a+7  a a+8 2a+5 2a+8  1 3a+7  0
 0  0 3a+6  0 3a+6  3 6a+6 6a+6  6 3a 3a+6 3a  3 3a  3  3 6a+6  6  6 3a+6 3a+6 6a 3a+3 3a+3 6a+6  3 6a+3 3a+3 6a 3a+3  6 3a+6  6  3 6a+6  3  0
 0  0  0  3 3a+6 3a+6  3 3a  3 3a+3 6a 6a+6 6a 6a+3  0 6a+6 3a+3 3a+6 6a+3  6 3a 3a 3a 6a+6 6a+3 3a 6a+3 6a 6a+6 3a+3  6  6 6a 3a 3a 6a+3  0

generates a code of length 37 over GR(81,9) who´s minimum homogenous weight is 261.

Homogenous weight enumerator: w(x)=1x^0+104x^261+216x^265+640x^270+72x^272+1440x^273+2304x^274+1088x^279+1296x^280+1728x^281+15120x^282+9936x^283+1088x^288+20736x^289+13824x^290+82080x^291+30672x^292+1080x^297+82944x^298+36864x^299+163800x^300+61848x^301+1008x^306+872x^315+568x^324+112x^333

The gray image is a code over GF(9) with n=333, k=6 and d=261.
This code was found by Heurico 1.16 in 19.5 seconds.