Numbers whose base-3 representation has 4 more 0's than 2's.

Terms

a(0) =81a(1) =244a(2) =246a(3) =252a(4) =270a(5) =324a(6) =486a(7) =731a(8) =733a(9) =735a(10) =739a(11) =741a(12) =747a(13) =757a(14) =759a(15) =765a(16) =783a(17) =811a(18) =813a(19) =819a(20) =837a(21) =891a(22) =973a(23) =975a(24) =981a(25) =999a(26) =1053a(27) =1215a(28) =1459a(29) =1461