Even-indexed terms of A001629(n), n >= 2, (Fibonacci convolution).

Terms

a(0) =1a(1) =5a(2) =20a(3) =71a(4) =235a(5) =744a(6) =2285a(7) =6865a(8) =20284a(9) =59155a(10) =170711a(11) =488400a(12) =1387225a(13) =3916061a(14) =10996580a(15) =30737759a(16) =85573315a(17) =237387960a(18) =656451269a(19) =1810142185a(20) =4978643596a(21) =13661617195a(22) =37409025455a(23) =102238082976a(24) =278920277425a(25) =759695287349