G.f. A(x) satisfies A(x) = 1/(1 - x/(1 - x*A(x)^2)^4).
A391647
G.f. A(x) satisfies A(x) = 1/(1 - x/(1 - x*A(x)^2)^4).
Terms
- a(0) =1a(1) =1a(2) =5a(3) =27a(4) =169a(5) =1142a(6) =8119a(7) =59858a(8) =453457a(9) =3508387a(10) =27605438a(11) =220222006a(12) =1777070719a(13) =14479635755a(14) =118964104210a(15) =984458054901
External references
- oeis: A391647