Convolution of Fibonacci numbers and A023533.

Terms

a(0) =1a(1) =1a(2) =2a(3) =4a(4) =6a(5) =10a(6) =16a(7) =26a(8) =42a(9) =69a(10) =111a(11) =180a(12) =291a(13) =471a(14) =762a(15) =1233a(16) =1995a(17) =3228a(18) =5223a(19) =8452a(20) =13675a(21) =22127a(22) =35802a(23) =57929a(24) =93731a(25) =151660a(26) =245391a(27) =397051a(28) =642442a(29) =1039493