A095885 - cp's OEIS frontend

A095885 Let F(x) be the function such that F(F(x)) = arctan(x), then F(x) = Sum_{n>=0} a(n)*x^(2n+1)/(2n+1)!.

n	a(n)
0	1
1	-1
2	7
3	-129
4	4489
5	-249485
6	20130311
7	-2233371917
8	329796121169
9	-62717244921977
10	14635852695795623
11	-4021254983530551833
12	1345410098638648813593
13	-602107783524378517901957
14	304930961594040255078182951
15	-81321478646591075063015099621

[1, -1, 7, -129, 4489, -249485, 20130311, -2233371917, 329796121169, -62717244921977, 14635852695795623, -4021254983530551833, 1345410098638648813593, -602107783524378517901957, 304930961594040255078182951, -81321478646591075063015099621]

cp's OEIS Frontend

A095885 Let F(x) be the function such that F(F(x)) = arctan(x), then F(x) = Sum_{n>=0} a(n)*x^(2n+1)/(2n+1)!.

Table of values

List of values