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.

A212922 G.f. satisfies: A(x) = x^2/(1-x) + Series_Reversion(x - x*A(x)).

Table of values

n a(n)
1 1
2 2
3 5
4 21
5 120
6 800
7 5881
8 46565
9 391876
10 3473879
11 32226510
12 311313683
13 3119693862
14 32333294383
15 345754479372
16 3807294710182
17 43101806735623
18 500977869387150
19 5971566838065819
20 72925079326977943
21 911614856156206061
22 11656341547670071145
23 152347288068103795503

List of values

[1, 2, 5, 21, 120, 800, 5881, 46565, 391876, 3473879, 32226510, 311313683, 3119693862, 32333294383, 345754479372, 3807294710182, 43101806735623, 500977869387150, 5971566838065819, 72925079326977943, 911614856156206061, 11656341547670071145, 152347288068103795503]

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

Content is available under The OEIS End-User License Agreement.