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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.

A295256 Expansion of e.g.f. 2/(1 + sqrt(1 - 4*x*cosh(x))).

Table of values

n a(n)
0 1
1 1
2 4
3 33
4 384
5 5945
6 115680
7 2713417
8 74568704
9 2350925649
10 83660474880
11 3317599815761
12 145087264278528
13 6937450761100873
14 360078818344534016
15 20162761727269502265
16 1211588127198611374080
17 77769423447774393465377
18 5310706204624302598127616
19 384439720034220718046773249

List of values

[1, 1, 4, 33, 384, 5945, 115680, 2713417, 74568704, 2350925649, 83660474880, 3317599815761, 145087264278528, 6937450761100873, 360078818344534016, 20162761727269502265, 1211588127198611374080, 77769423447774393465377, 5310706204624302598127616, 384439720034220718046773249]

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

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