The generator matrix

 1  0  0  1  1  1  1  1  0  0  0  1  1  1  1
 0  1  0  1  0  8  1  8  1  1  1  0  7  0  0
 0  0  1  8  1  8  1  0  8  0  0  2  2  3  0
 0  0  0  6  0  0  0  3  3  3  3  6  3  6  0
 0  0  0  0  6  0  6  6  3  3  0  3  6  6  0
 0  0  0  0  0  3  3  3  0  3  6  6  0  6  0

generates a code of length 15 over Z9 who´s minimum homogenous weight is 18.

Homogenous weight enumerator: w(x)=1x^0+42x^18+18x^19+30x^20+120x^21+234x^22+228x^23+570x^24+774x^25+732x^26+1310x^27+2520x^28+1320x^29+2148x^30+3492x^31+1392x^32+1842x^33+1494x^34+672x^35+456x^36+216x^37+54x^39+18x^42

The gray image is a code over GF(3) with n=45, k=9 and d=18.
This code was found by Heurico 1.16 in 0.422 seconds.