Convolved Fibonacci numbers.

Terms

a(0) =1a(1) =3a(2) =9a(3) =22a(4) =51a(5) =111a(6) =233a(7) =474a(8) =942a(9) =1836a(10) =3522a(11) =6666a(12) =12473a(13) =23109a(14) =42447a(15) =77378a(16) =140109a(17) =252177a(18) =451441a(19) =804228a(20) =1426380a(21) =2519640a(22) =4434420a(23) =7777860a(24) =13599505a(25) =23709783a(26) =41225349a(27) =71501422a(28) =123723351a(29) =213619683