cp's OEIS Frontend

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.

A046991 Denominators of Taylor series for log(1/cos(x)). Also from log(cos(x)).

Table of values

n a(n)
0 1
1 2
2 12
3 45
4 2520
5 14175
6 935550
7 42567525
8 10216206000
9 97692469875
10 18561569276250
11 2143861251406875
12 34806217964017500
13 48076088562799171875
14 9086380738369043484375
15 3952575621190533915703125
16 3920955016221009644377500000
17 68739242628124575327993046875

List of values

[1, 2, 12, 45, 2520, 14175, 935550, 42567525, 10216206000, 97692469875, 18561569276250, 2143861251406875, 34806217964017500, 48076088562799171875, 9086380738369043484375, 3952575621190533915703125, 3920955016221009644377500000, 68739242628124575327993046875]

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

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