G.f. A(x) satisfies: 2 = Sum_{n=-oo..+oo} (-x)^(n*(n+1)/2) * ((1+x)^n + 2*A(x))^(n+1).
A355156
G.f. A(x) satisfies: 2 = Sum_{n=-oo..+oo} (-x)^(n*(n+1)/2) * ((1+x)^n + 2*A(x))^(n+1).
Terms
- a(0) =1a(1) =3a(2) =7a(3) =34a(4) =156a(5) =635a(6) =2966a(7) =14327a(8) =66047a(9) =314700a(10) =1560159a(11) =7710390a(12) =38251395a(13) =192549444a(14) =974601369a(15) =4952273462a(16) =25349634715a(17) =130414412847a(18) =673028519274
External references
- oeis: A355156