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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.

A273507 T(n, m), denominators of coefficients in a power/Fourier series expansion of the plane pendulum's exact phase space trajectory.

Table of values

n a(n)
1 6
2 45
3 72
4 630
5 30
6 144
7 14175
8 56700
9 3240
10 10368
11 467775
12 42525
13 45360
14 3888
15 62208
16 42567525
17 2910600
18 145800
19 272160
20 31104
21 746496
22 1277025750
23 3831077250
24 471517200
25 729000
26 13996800
27 559872
28 497664
29 97692469875
30 114932317500
31 10945935000
32 20207880000
33 4199040
34 124416
35 746496
36 23887872

List of values

[6, 45, 72, 630, 30, 144, 14175, 56700, 3240, 10368, 467775, 42525, 45360, 3888, 62208, 42567525, 2910600, 145800, 272160, 31104, 746496, 1277025750, 3831077250, 471517200, 729000, 13996800, 559872, 497664, 97692469875, 114932317500, 10945935000, 20207880000, 4199040, 124416, 746496, 23887872]

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

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