Number of compositions of 2n into n Fibonacci parts.

Terms

a(0) =1a(1) =1a(2) =3a(3) =7a(4) =23a(5) =71a(6) =231a(7) =750a(8) =2479a(9) =8251a(10) =27673a(11) =93248a(12) =315515a(13) =1071097a(14) =3646618a(15) =12445982a(16) =42571327a(17) =145895599a(18) =500855361a(19) =1722062265a(20) =5929045173a(21) =20439121983a(22) =70539320558a(23) =243695962031a(24) =842704577995