G.f. A(x) satisfies: Sum_{n>=0} x^n * A(x)^(n*(n-1)/2) = 2 - Sum_{n>=0} (-x)^n * A(x)^(n*(n+1)/2).
A337912
G.f. A(x) satisfies: Sum_{n>=0} x^n * A(x)^(n*(n-1)/2) = 2 - Sum_{n>=0} (-x)^n * A(x)^(n*(n+1)/2).
Terms
- a(0) =1a(1) =2a(2) =8a(3) =40a(4) =224a(5) =1368a(6) =8992a(7) =62792a(8) =459808a(9) =3493848a(10) =27354144a(11) =219715656a(12) =1805543456a(13) =15147831640a(14) =129520892704
External references
- oeis: A337912