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.

A293020 a(n) = n! * [x^n] exp(n*tan(x)).

Table of values

n a(n)
0 1
1 1
2 4
3 33
4 384
5 5705
6 103392
7 2213225
8 54648832
9 1529006769
10 47806489600
11 1651929898641
12 62514008358912
13 2571311967708601
14 114219516618117120
15 5449390043986849305
16 277913379747357786112
17 15087434965491213149153
18 868698417435317196816384
19 52875073161897308106963585

List of values

[1, 1, 4, 33, 384, 5705, 103392, 2213225, 54648832, 1529006769, 47806489600, 1651929898641, 62514008358912, 2571311967708601, 114219516618117120, 5449390043986849305, 277913379747357786112, 15087434965491213149153, 868698417435317196816384, 52875073161897308106963585]

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

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