n_F(n) where F() = Fibonacci numbers A000045.

Terms

a(0) =1a(1) =2a(2) =3a(3) =4a(4) =5a(5) =6a(6) =7a(7) =8a(8) =9a(9) =55a(10) =90a(11) =146a(12) =236a(13) =381a(14) =615a(15) =993a(16) =1604a(17) =2592a(18) =4190a(19) =13530a(20) =21893a(21) =35424a(22) =57317a(23) =92740a(24) =150055a(25) =242792a(26) =392843a(27) =635630a(28) =1028467a(29) =2496120