Convolved Fibonacci numbers.

Terms

a(0) =1a(1) =6a(2) =27a(3) =98a(4) =315a(5) =924a(6) =2534a(7) =6588a(8) =16407a(9) =39430a(10) =91959a(11) =209034a(12) =464723a(13) =1013292a(14) =2171850a(15) =4584620a(16) =9546570a(17) =19635840a(18) =39940460a(19) =80421600a(20) =160437690a(21) =317354740a(22) =622844730a(23) =1213580820a(24) =2348773525a(25) =4517541378a(26) =8638447293a(27) =16428864606a(28) =31086197469a(29) =58539877020