G.f. satisfies: A(x/A(x)^2) = C(x) where C(x) = 1 + x*C(x)^2 is the g.f. of the Catalan numbers (A000108).
A168448
G.f. satisfies: A(x/A(x)^2) = C(x) where C(x) = 1 + x*C(x)^2 is the g.f. of the Catalan numbers (A000108).
Terms
- a(0) =1a(1) =1a(2) =4a(3) =26a(4) =226a(5) =2395a(6) =29278a(7) =398499a(8) =5899534a(9) =93507783a(10) =1569405110a(11) =27672405800a(12) =509622262860
External references
- oeis: A168448