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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.

A357955 a(n) = 3*binomial(4*n,n) - 20*binomial(3*n,n) + 54*binomial(2*n,n).

Table of values

n a(n)
0 37
1 60
2 108
3 60
4 -660
5 60
6 82404
7 1411848
8 17540460
9 191318820
10 1952058108
11 19175376324
12 184118073828
13 1743153802320
14 16359157606200
15 152693295412560
16 1420516291306860
17 13190159377278324
18 122358232382484420
19 1134645084249344400
20 10522118980232969340

List of values

[37, 60, 108, 60, -660, 60, 82404, 1411848, 17540460, 191318820, 1952058108, 19175376324, 184118073828, 1743153802320, 16359157606200, 152693295412560, 1420516291306860, 13190159377278324, 122358232382484420, 1134645084249344400, 10522118980232969340]

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

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