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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.

A346272 Sum_{n>=0} a(n) * x^n / (n!)^2 = exp( BesselI(0,2*sqrt(x)) - 1 - x^3 / 36 ).

Table of values

n a(n)
0 1
1 1
2 3
3 15
4 115
5 1196
6 16282
7 276158
8 5713507
9 140482000
10 4047179258
11 134447125418
12 5097852537802
13 218254682152053
14 10469861372693621
15 558373926672949031
16 32908746221003292003
17 2130712239317226923136
18 150826951188229240683858
19 11618459541824256750732794

List of values

[1, 1, 3, 15, 115, 1196, 16282, 276158, 5713507, 140482000, 4047179258, 134447125418, 5097852537802, 218254682152053, 10469861372693621, 558373926672949031, 32908746221003292003, 2130712239317226923136, 150826951188229240683858, 11618459541824256750732794]

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

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