Numbers whose base-4 representation contains exactly four 0's and four 3's.

Terms

a(0) =49215a(1) =49359a(2) =49395a(3) =49404a(4) =49935a(5) =49971a(6) =49980a(7) =50115a(8) =50124a(9) =50160a(10) =52239a(11) =52275a(12) =52284a(13) =52419a(14) =52428a(15) =52464a(16) =52995a(17) =53004a(18) =53040a(19) =53184a(20) =61455a(21) =61491a(22) =61500a(23) =61635a(24) =61644a(25) =61680a(26) =62211a(27) =62220a(28) =62256a(29) =62400