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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.

A279239 Denominators of coefficients in expansion of (cos x)/(1 + cos(sqrt(x))).

Table of values

n a(n)
0 2
1 8
2 48
3 5760
4 80640
5 14515200
6 958003200
7 1394852659200
8 41845579776000
9 522642751488000
10 442345819668480000
11 8992005822220861440000
12 1240896803466478878720000
13 1613165844506422542336000000
14 609776689223427721003008000000

List of values

[2, 8, 48, 5760, 80640, 14515200, 958003200, 1394852659200, 41845579776000, 522642751488000, 442345819668480000, 8992005822220861440000, 1240896803466478878720000, 1613165844506422542336000000, 609776689223427721003008000000]

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

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