Odd numbers in sorted order from generation 2 onwards.

Terms

a(0) =3a(1) =7a(2) =13a(3) =23a(4) =43a(5) =67a(6) =97a(7) =125a(8) =127a(9) =179a(10) =181a(11) =237a(12) =339a(13) =403a(14) =453a(15) =729a(16) =757a(17) =879a(18) =1109a(19) =1399a(20) =2199a(21) =2653a(22) =4491a(23) =5335a(24) =6231a(25) =7461a(26) =8933a(27) =12093a(28) =12613a(29) =14409