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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.

A197716 a(n) = ceiling((2n+1/n)^n).

Table of values

n a(n)
1 3
2 21
3 255
4 4633
5 110409
6 3243618
7 113177497
8 4570858600
9 209655304353
10 10763674952098
11 611433842280388
12 38071427445729201
13 2578294348444597267
14 188670154792420320215
15 14834716200104606205408
16 1247263229999781126495328
17 111661618863544248806155260

List of values

[3, 21, 255, 4633, 110409, 3243618, 113177497, 4570858600, 209655304353, 10763674952098, 611433842280388, 38071427445729201, 2578294348444597267, 188670154792420320215, 14834716200104606205408, 1247263229999781126495328, 111661618863544248806155260]

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

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