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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.

A000590 a(n) = 13*binomial(2n,n-6)/(n+7).

Table of values

n a(n)
6 1
7 13
8 104
9 663
10 3705
11 19019
12 92092
13 427570
14 1924065
15 8454225
16 36463440
17 154969620
18 650872404
19 2707475148
20 11173706960
21 45812198536
22 186803188858
23 758201178306
24 3065415516592
25 12352414499425
26 49634247352235
27 198954083924505
28 795816335698020
29 3177498557750790

List of values

[1, 13, 104, 663, 3705, 19019, 92092, 427570, 1924065, 8454225, 36463440, 154969620, 650872404, 2707475148, 11173706960, 45812198536, 186803188858, 758201178306, 3065415516592, 12352414499425, 49634247352235, 198954083924505, 795816335698020, 3177498557750790]

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

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