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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.

A081439 Expansion of exp(2*x)*cosh(x/sqrt(1 - x^2)).

Table of values

n a(n)
0 1
1 2
2 5
3 14
4 53
5 242
6 1505
7 10334
8 89129
9 797090
10 8618045
11 94186094
12 1220350301
13 15745031954
14 237660317081
15 3534411032894
16 60889488170321
17 1025300949710402
18 19847126167227509
19 373194859437512654
20 8017708459752349061

List of values

[1, 2, 5, 14, 53, 242, 1505, 10334, 89129, 797090, 8618045, 94186094, 1220350301, 15745031954, 237660317081, 3534411032894, 60889488170321, 1025300949710402, 19847126167227509, 373194859437512654, 8017708459752349061]

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

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