E.g.f.: Sum_{n>=0} a(n)*x^n/n! = {Sum_{n>=0} F(n+1)*x^n/n!}^2, where F(n) is the n-th Fibonacci number.
A081057
E.g.f.: Sum_{n>=0} a(n)*x^n/n! = {Sum_{n>=0} F(n+1)*x^n/n!}^2, where F(n) is the n-th Fibonacci number.
Terms
- a(0) =1a(1) =2a(2) =6a(3) =18a(4) =58a(5) =186a(6) =602a(7) =1946a(8) =6298a(9) =20378a(10) =65946a(11) =213402a(12) =690586a(13) =2234778a(14) =7231898a(15) =23402906a(16) =75733402a(17) =245078426a(18) =793090458a(19) =2566494618a(20) =8305351066a(21) =26876680602a(22) =86974765466a(23) =281456253338a(24) =910811568538
External references
- oeis: A081057