G.f. A(x) satisfies A(x) = 1 + x + x*(1 + x)^4*A(x)^2.
A366238
G.f. A(x) satisfies A(x) = 1 + x + x*(1 + x)^4*A(x)^2.
Terms
- a(0) =1a(1) =2a(2) =8a(3) =42a(4) =224a(5) =1281a(6) =7630a(7) =46816a(8) =294008a(9) =1880588a(10) =12209474a(11) =80251889a(12) =532988530a(13) =3571260662a(14) =24112334292a(15) =163887278097
External references
- oeis: A366238