Column 2 of triangle A113983; also a(n) = A113983(n+1,1) + [A113983^2](n,1).
A113985
Column 2 of triangle A113983; also a(n) = A113983(n+1,1) + [A113983^2](n,1).
Terms
- a(0) =1a(1) =3a(2) =7a(3) =17a(4) =45a(5) =135a(6) =463a(7) =1817a(8) =8121a(9) =41075a(10) =233471a(11) =1480945a(12) =10412589a(13) =80634431a(14) =683674831a(15) =6312152353a(16) =63144706753a(17) =681317547507
External references
- oeis: A113985