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This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A318006 E.g.f. A(x) satisfies: cos(A(x)) + sin(A(x)) = 1/( cos(A(-x)) + sin(A(-x)) ).

Table of values

n a(n)
1 1
2 2
3 6
4 40
5 360
6 4592
7 70896
8 1279360
9 26497920
10 619457792
11 16166151936
12 466022394880
13 14708199367680
14 504453778491392
15 18681868054910976
16 742996971891097600
17 31583887537425776640
18 1429076863804079931392
19 68575244394079858262016
20 3478457209493103235563520
21 185971933231431479545036800

List of values

[1, 2, 6, 40, 360, 4592, 70896, 1279360, 26497920, 619457792, 16166151936, 466022394880, 14708199367680, 504453778491392, 18681868054910976, 742996971891097600, 31583887537425776640, 1429076863804079931392, 68575244394079858262016, 3478457209493103235563520, 185971933231431479545036800]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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