G.f. A(x) satisfies: A(x) = (1 - x*A(x)) * Sum_{n>=0} x^n / (1 - x*A(x)^(n+1)).
A340891
G.f. A(x) satisfies: A(x) = (1 - x*A(x)) * Sum_{n>=0} x^n / (1 - x*A(x)^(n+1)).
Terms
- a(0) =1a(1) =1a(2) =1a(3) =2a(4) =6a(5) =20a(6) =70a(7) =255a(8) =961a(9) =3726a(10) =14797a(11) =59986a(12) =247606a(13) =1038632a(14) =4420837a(15) =19071954a(16) =83321966a(17) =368400431a(18) =1647706426a(19) =7452622503a(20) =34082926816a(21) =157595263361a(22) =736806253045
External references
- oeis: A340891