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.

A182037 Expansion of 1 - (1 - 2*x - x^2)^(1/2).

Table of values

n a(n)
0 0
1 1
2 2
3 6
4 36
5 300
6 3240
7 42840
8 670320
9 12111120
10 248119200
11 5683154400
12 143910043200
13 3991909521600
14 120376874217600
15 3920816403504000
16 137177166174048000
17 5130755025780384000
18 204295093225134912000
19 8627985710304472512000
20 385222786392984059520000

List of values

[0, 1, 2, 6, 36, 300, 3240, 42840, 670320, 12111120, 248119200, 5683154400, 143910043200, 3991909521600, 120376874217600, 3920816403504000, 137177166174048000, 5130755025780384000, 204295093225134912000, 8627985710304472512000, 385222786392984059520000]

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

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