Sequence satisfies T^2(a)=a, where T is defined below.

Terms

a(0) =1a(1) =2a(2) =2a(3) =4a(4) =4a(5) =7a(6) =8a(7) =12a(8) =13a(9) =18a(10) =21a(11) =28a(12) =32a(13) =41a(14) =47a(15) =59a(16) =67a(17) =84a(18) =95a(19) =116a(20) =130a(21) =158a(22) =177a(23) =211a(24) =237a(25) =279a(26) =312a(27) =364a(28) =408a(29) =471