Numbers with exactly 2 2's in their ternary expansion.

Terms

a(0) =8a(1) =17a(2) =20a(3) =23a(4) =24a(5) =25a(6) =35a(7) =44a(8) =47a(9) =50a(10) =51a(11) =52a(12) =56a(13) =59a(14) =60a(15) =61a(16) =65a(17) =68a(18) =69a(19) =70a(20) =72a(21) =73a(22) =75a(23) =76a(24) =89a(25) =98a(26) =101a(27) =104a(28) =105a(29) =106