Numbers whose base-12 representation has the same nonzero number of 0's and 9's.

Terms

a(0) =108a(1) =153a(2) =252a(3) =297a(4) =396a(5) =441a(6) =540a(7) =585a(8) =684a(9) =729a(10) =828a(11) =873a(12) =972a(13) =1017a(14) =1116a(15) =1161a(16) =1260a(17) =1297a(18) =1298a(19) =1299a(20) =1300a(21) =1301a(22) =1302a(23) =1303a(24) =1304a(25) =1306a(26) =1307a(27) =1308a(28) =1320a(29) =1332