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.

A189238 E.g.f. x/cos(x)*exp(x/cos(x)).

Table of values

n a(n)
1 1
2 2
3 6
4 28
5 120
6 726
7 4424
8 31928
9 249984
10 2131690
11 20027392
12 199240020
13 2162269824
14 24676708798
15 302660939520
16 3897794538864
17 53264941301760
18 763279034957010
19 11499327153704960
20 181271619624350860

List of values

[1, 2, 6, 28, 120, 726, 4424, 31928, 249984, 2131690, 20027392, 199240020, 2162269824, 24676708798, 302660939520, 3897794538864, 53264941301760, 763279034957010, 11499327153704960, 181271619624350860]

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

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