G.f.: A(x) = 1/(1 - x*A_0(x)) where A_0(x) = 1/(1 - 2x*A_1(x)^(1/2)) such that A_{n-1}(x) = 1/(1 - 2^n*x*[A_{n}(x)]^(1/2^n)) for n>=1 with A_0(x) equal to the g.f. of A137984.
A137983
G.f.: A(x) = 1/(1 - x*A_0(x)) where A_0(x) = 1/(1 - 2x*A_1(x)^(1/2)) such that A_{n-1}(x) = 1/(1 - 2^n*x*[A_{n}(x)]^(1/2^n)) for n>=1 with A_0(x) equal to the g.f. of A137984.
Terms
- a(0) =1a(1) =1a(2) =3a(3) =13a(4) =71a(5) =469a(6) =3723a(7) =36005a(8) =436547a(9) =6899269a(10) =148118063a(11) =4468393661a(12) =193343082863
External references
- oeis: A137983