G.f. satisfies A(x) = ( 1 + x * (1 + x*A(x)^3)^2 )^2.
A371610
G.f. satisfies A(x) = ( 1 + x * (1 + x*A(x)^3)^2 )^2.
Terms
- a(0) =1a(1) =2a(2) =5a(3) =30a(4) =162a(5) =996a(6) =6449a(7) =43086a(8) =296750a(9) =2086244a(10) =14920110a(11) =108202326a(12) =793793106a(13) =5880645408a(14) =43931188235a(15) =330570658228
External references
- oeis: A371610