G.f. A(x) satisfies A( x - A(x)^2/(1 - A(x)^2) ) = x.
A380678
G.f. A(x) satisfies A( x - A(x)^2/(1 - A(x)^2) ) = x.
Terms
- a(0) =1a(1) =1a(2) =4a(3) =25a(4) =190a(5) =1645a(6) =15652a(7) =160186a(8) =1739032a(9) =19838179a(10) =236192158a(11) =2920269202a(12) =37352521348a(13) =492799406899
External references
- oeis: A380678