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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.

A131764 Inverse Euler transform of central binomial coefficients A000984.

Table of values

n a(n)
0 1
1 2
2 3
3 10
4 30
5 102
6 335
7 1170
8 4080
9 14560
10 52377
11 190650
12 698870
13 2581110
14 9586395
15 35791358
16 134215680
17 505290270
18 1908866960
19 7233629130
20 27487764474
21 104715392730
22 399822314775
23 1529755308210
24 5864061663920
25 22517998136832
26 86607683851185
27 333599972392960
28 1286742745883790
29 4969489243995030
30 19215358392200893
31 74382032555280450
32 288230376084602880

List of values

[1, 2, 3, 10, 30, 102, 335, 1170, 4080, 14560, 52377, 190650, 698870, 2581110, 9586395, 35791358, 134215680, 505290270, 1908866960, 7233629130, 27487764474, 104715392730, 399822314775, 1529755308210, 5864061663920, 22517998136832, 86607683851185, 333599972392960, 1286742745883790, 4969489243995030, 19215358392200893, 74382032555280450, 288230376084602880]

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

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