G.f. satisfies A(x) = 1 + x*A(x) * A( x*A(x) )^2.
A121687
G.f. satisfies A(x) = 1 + x*A(x) * A( x*A(x) )^2.
Terms
- a(0) =1a(1) =1a(2) =3a(3) =14a(4) =83a(5) =574a(6) =4432a(7) =37244a(8) =335153a(9) =3194510a(10) =32001596a(11) =335019839a(12) =3649450270a(13) =41227610316a(14) =481724831132
External references
- oeis: A121687