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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.

A303503 a(n) = (2*n)! * [x^(2*n)] BesselI(0,2*x)^n.

Table of values

n a(n)
0 1
1 2
2 36
3 1860
4 190120
5 32232060
6 8175770064
7 2898980908824
8 1369263687414480
9 830988068906518380
10 630109741730668410640
11 583773362067938664133512
12 648851848280206013365243776
13 852146184628067383511375555000
14 1305460597778526044143501996708800
15 2307324514460203126471248458864413200

List of values

[1, 2, 36, 1860, 190120, 32232060, 8175770064, 2898980908824, 1369263687414480, 830988068906518380, 630109741730668410640, 583773362067938664133512, 648851848280206013365243776, 852146184628067383511375555000, 1305460597778526044143501996708800, 2307324514460203126471248458864413200]

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

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