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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.

A378781 a(n) = n^3 * 2^n * binomial(3*n, n) / 3.

Table of values

n a(n)
0 0
1 2
2 160
3 6048
4 168960
5 4004000
6 85542912
7 1701719040
8 32133218304
9 583116019200
10 10255365120000
11 175853140869120
12 2953078190899200
13 48728661198077952
14 792158036489666560
15 12713192776728576000
16 201760465448645689344
17 3170643145439310643200
18 49394436443159427809280

List of values

[0, 2, 160, 6048, 168960, 4004000, 85542912, 1701719040, 32133218304, 583116019200, 10255365120000, 175853140869120, 2953078190899200, 48728661198077952, 792158036489666560, 12713192776728576000, 201760465448645689344, 3170643145439310643200, 49394436443159427809280]

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

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