Numbers whose base-12 representation has the same nonzero number of 9's and 11's.

Terms

a(0) =119a(1) =141a(2) =263a(3) =285a(4) =407a(5) =429a(6) =551a(7) =573a(8) =695a(9) =717a(10) =839a(11) =861a(12) =983a(13) =1005a(14) =1127a(15) =1149a(16) =1271a(17) =1293a(18) =1307a(19) =1319a(20) =1331a(21) =1343a(22) =1355a(23) =1367a(24) =1379a(25) =1391a(26) =1403a(27) =1427a(28) =1428a(29) =1429