A136558 - cp's OEIS frontend

A136558 G.f.: A(x) = Sum_{n>=0} arcsinh( 2^(2n+1)*x )^(2n+1) / (2n+1)!; a power series in x with integer coefficients.

n	a(n)
1	2
2	0
3	84
4	0
5	276892
6	0
7	111457917800
8	0
9	6660816097416169260
10	0
11	66597307693046550483175282456
12	0
13	120167520447600665027319450022840022638104
14	0
15	41233407800231936275686869695450406221641586822849599440
16	0
17	2796405930832642696090353299413183601303402593622351242536692586333202380
18	0

[2, 0, 84, 0, 276892, 0, 111457917800, 0, 6660816097416169260, 0, 66597307693046550483175282456, 0, 120167520447600665027319450022840022638104, 0, 41233407800231936275686869695450406221641586822849599440, 0, 2796405930832642696090353299413183601303402593622351242536692586333202380, 0]

cp's OEIS Frontend

A136558 G.f.: A(x) = Sum_{n>=0} arcsinh( 2^(2n+1)*x )^(2n+1) / (2n+1)!; a power series in x with integer coefficients.

Table of values

List of values