a(n) = n OR n^3 (applied to ternary expansions).

Terms

a(0) =1a(1) =8a(2) =30a(3) =67a(4) =125a(5) =222a(6) =349a(7) =512a(8) =738a(9) =1009a(10) =1340a(11) =1740a(12) =2200a(13) =2744a(14) =3390a(15) =4102a(16) =4913a(17) =5850a(18) =6877a(19) =8018a(20) =9282a(21) =10660a(22) =12176a(23) =13848a(24) =15631a(25) =17576a(26) =19710a(27) =21979a(28) =24416a(29) =27003