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

generates a code of length 36 over GR(81,9) who´s minimum homogenous weight is 261.

Homogenous weight enumerator: w(x)=1x^0+560x^261+288x^264+864x^265+1368x^266+1072x^270+648x^272+6912x^273+9072x^274+8856x^275+1184x^279+10368x^281+55296x^282+49248x^283+36504x^284+1128x^288+41472x^290+147456x^291+98280x^292+58248x^293+1024x^297+880x^306+592x^315+120x^324

The gray image is a code over GF(9) with n=324, k=6 and d=261.
This code was found by Heurico 1.16 in 17.9 seconds.