G.f. A(x) satisfies: 1 = Sum_{n>=0} x^n * ((1 + 2*x)^n - A(x))^(n+1), where A(0) = 0.
A325582
G.f. A(x) satisfies: 1 = Sum_{n>=0} x^n * ((1 + 2*x)^n - A(x))^(n+1), where A(0) = 0.
Terms
- a(0) =1a(1) =3a(2) =5a(3) =35a(4) =181a(5) =1135a(6) =8145a(7) =61839a(8) =509601a(9) =4463439a(10) =41334849a(11) =402989487a(12) =4117422337a(13) =43944607807a(14) =488583342657
External references
- oeis: A325582