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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.

A098272 a(n) = 2^(2n+1) * binomial(3n,n)/(2n+1).

Table of values

n a(n)
0 2
1 8
2 96
3 1536
4 28160
5 559104
6 11698176
7 254017536
8 5670567936
9 129328742400
10 3000426823680
11 70587116421120
12 1679973370822656
13 40376795886780416
14 978590323955466240
15 23890230876435382272
16 586939535850605641728

List of values

[2, 8, 96, 1536, 28160, 559104, 11698176, 254017536, 5670567936, 129328742400, 3000426823680, 70587116421120, 1679973370822656, 40376795886780416, 978590323955466240, 23890230876435382272, 586939535850605641728]

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

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