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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.

A294454 a(n) = n! * [x^n] exp(2*n*x)*BesselI(0,2*x)^n.

Table of values

n a(n)
0 1
1 2
2 20
3 324
4 7336
5 213500
6 7593744
7 319195800
8 15481238224
9 850968357228
10 52279073479120
11 3549850939488392
12 263999303861731200
13 21340730504572110008
14 1863120652816098506432
15 174706136370865217610000
16 17512175948995988236164000
17 1868638289932305589084614220
18 211478046685658614366937497296

List of values

[1, 2, 20, 324, 7336, 213500, 7593744, 319195800, 15481238224, 850968357228, 52279073479120, 3549850939488392, 263999303861731200, 21340730504572110008, 1863120652816098506432, 174706136370865217610000, 17512175948995988236164000, 1868638289932305589084614220, 211478046685658614366937497296]

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

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