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

Terms

a(0) =1a(1) =10a(2) =27a(3) =68a(4) =125a(5) =222a(6) =343a(7) =520a(8) =729a(9) =1002a(10) =1339a(11) =1740a(12) =2205a(13) =2750a(14) =3375a(15) =4112a(16) =4913a(17) =5850a(18) =6875a(19) =8020a(20) =9277a(21) =10654a(22) =12183a(23) =13848a(24) =15641a(25) =17594a(26) =19707a(27) =21980a(28) =24413a(29) =27006