cp's OEIS Frontend

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.

A213640 E.g.f. satisfies: A(x) = x - log(1 - A(x)^2).

Table of values

n a(n)
1 1
2 2
3 12
4 132
5 2040
6 40560
7 986160
8 28344960
9 940222080
10 35350378560
11 1485586206720
12 69006955691520
13 3510875174526720
14 194162144086310400
15 11597083480958976000
16 744005639375065267200
17 51024015181398702643200
18 3725042532308649628876800
19 288434288836744276094668800

List of values

[1, 2, 12, 132, 2040, 40560, 986160, 28344960, 940222080, 35350378560, 1485586206720, 69006955691520, 3510875174526720, 194162144086310400, 11597083480958976000, 744005639375065267200, 51024015181398702643200, 3725042532308649628876800, 288434288836744276094668800]

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

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