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

Terms

a(0) =1a(1) =2a(2) =3a(3) =4a(4) =6a(5) =8a(6) =10a(7) =13a(8) =17a(9) =21a(10) =26a(11) =33a(12) =39a(13) =48a(14) =59a(15) =68a(16) =82a(17) =97a(18) =113a(19) =133a(20) =155a(21) =179a(22) =207a(23) =240a(24) =273a(25) =312a(26) =358a(27) =404a(28) =459a(29) =521