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

Terms

a(0) =1029a(1) =1041a(2) =1044a(3) =1089a(4) =1092a(5) =1104a(6) =1281a(7) =1284a(8) =1296a(9) =1344a(10) =4118a(11) =4119a(12) =4121a(13) =4125a(14) =4133a(15) =4149a(16) =4166a(17) =4167a(18) =4169a(19) =4173a(20) =4178a(21) =4179a(22) =4184a(23) =4188a(24) =4193a(25) =4196a(26) =4209a(27) =4212a(28) =4229a(29) =4241