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.

A052580 E.g.f. (1-2x)/(1-2x-x^2).

Table of values

n a(n)
0 1
1 0
2 2
3 12
4 120
5 1440
6 20880
7 352800
8 6814080
9 148055040
10 3574368000
11 94922150400
12 2749948185600
13 86306508288000
14 2917072801843200
15 105636550795776000
16 4080467097907200000
17 167469023145295872000

List of values

[1, 0, 2, 12, 120, 1440, 20880, 352800, 6814080, 148055040, 3574368000, 94922150400, 2749948185600, 86306508288000, 2917072801843200, 105636550795776000, 4080467097907200000, 167469023145295872000]

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

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