Numbers whose base-4 representation has the number of 0's, 2's and 3's.

Terms

a(0) =1a(1) =5a(2) =21a(3) =35a(4) =44a(5) =50a(6) =56a(7) =75a(8) =78a(9) =85a(10) =99a(11) =108a(12) =114a(13) =120a(14) =135a(15) =141a(16) =147a(17) =156a(18) =177a(19) =180a(20) =198a(21) =201a(22) =210a(23) =216a(24) =225a(25) =228a(26) =283a(27) =286a(28) =295a(29) =301