G.f. A(x) satisfies 1/2 = Sum_{n=-oo..+oo} (-1)^n * x^(2*n) * (A(x) + (-x)^n)^(2*n-1).
A379765
G.f. A(x) satisfies 1/2 = Sum_{n=-oo..+oo} (-1)^n * x^(2*n) * (A(x) + (-x)^n)^(2*n-1).
Terms
- a(0) =1a(1) =4a(2) =16a(3) =108a(4) =764a(5) =5772a(6) =45608a(7) =372112a(8) =3110868a(9) =26511720a(10) =229465696a(11) =2011560120a(12) =17823251908a(13) =159361875452
External references
- oeis: A379765