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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.

A003701 Expansion of e.g.f. exp(x)/cos(x).

Table of values

n a(n)
0 1
1 1
2 2
3 4
4 12
5 36
6 152
7 624
8 3472
9 18256
10 126752
11 814144
12 6781632
13 51475776
14 500231552
15 4381112064
16 48656756992
17 482962852096
18 6034272215552
19 66942218896384
20 929327412759552
21 11394877025289216
22 174008703107274752
23 2336793875186479104
24 38928735228629389312

List of values

[1, 1, 2, 4, 12, 36, 152, 624, 3472, 18256, 126752, 814144, 6781632, 51475776, 500231552, 4381112064, 48656756992, 482962852096, 6034272215552, 66942218896384, 929327412759552, 11394877025289216, 174008703107274752, 2336793875186479104, 38928735228629389312]

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

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