G.f. satisfies A(x) = 1 + x*A(x)^2 / (1 - x*A(x)^2)^2.
A367237
G.f. satisfies A(x) = 1 + x*A(x)^2 / (1 - x*A(x)^2)^2.
Terms
- a(0) =1a(1) =1a(2) =4a(3) =20a(4) =114a(5) =702a(6) =4550a(7) =30585a(8) =211270a(9) =1490561a(10) =10695354a(11) =77809481a(12) =572608270a(13) =4254996670a(14) =31882486314a(15) =240620654468
External references
- oeis: A367237