G.f. satisfies: A(x) = x^2 + Series_Reversion(x - x*A(x)).
A212923
G.f. satisfies: A(x) = x^2 + Series_Reversion(x - x*A(x)).
Terms
- a(0) =1a(1) =2a(2) =4a(3) =19a(4) =111a(5) =734a(6) =5338a(7) =41839a(8) =348827a(9) =3065255a(10) =28199803a(11) =270253498a(12) =2687629926a(13) =27652068276a(14) =293627150268
External references
- oeis: A212923