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.

A354309 Expansion of e.g.f. 1/(1 - 2*x)^(x/2).

Table of values

n a(n)
0 1
1 0
2 2
3 6
4 44
5 360
6 3744
7 46200
8 662864
9 10838016
10 198943200
11 4050937440
12 90613710912
13 2208677328000
14 58265734055424
15 1653914478303360
16 50263564166365440
17 1628300694034022400
18 56012708047907510784
19 2039053421375533094400
20 78314004507947110456320

List of values

[1, 0, 2, 6, 44, 360, 3744, 46200, 662864, 10838016, 198943200, 4050937440, 90613710912, 2208677328000, 58265734055424, 1653914478303360, 50263564166365440, 1628300694034022400, 56012708047907510784, 2039053421375533094400, 78314004507947110456320]

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

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