Numbers whose base-4 representation contains exactly four 0's and four 1's.

Terms

a(0) =16405a(1) =16453a(2) =16465a(3) =16468a(4) =16645a(5) =16657a(6) =16660a(7) =16705a(8) =16708a(9) =16720a(10) =17413a(11) =17425a(12) =17428a(13) =17473a(14) =17476a(15) =17488a(16) =17665a(17) =17668a(18) =17680a(19) =17728a(20) =20485a(21) =20497a(22) =20500a(23) =20545a(24) =20548a(25) =20560a(26) =20737a(27) =20740a(28) =20752a(29) =20800