Numbers whose base-12 representation has the same nonzero number of 7's and 9's.

Terms

a(0) =93a(1) =115a(2) =237a(3) =259a(4) =381a(5) =403a(6) =525a(7) =547a(8) =669a(9) =691a(10) =813a(11) =835a(12) =957a(13) =979a(14) =1017a(15) =1029a(16) =1041a(17) =1053a(18) =1065a(19) =1077a(20) =1089a(21) =1113a(22) =1116a(23) =1117a(24) =1118a(25) =1119a(26) =1120a(27) =1121a(28) =1122a(29) =1124