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.

A065619 Expansion of e.g.f. x * (tan(x) + sec(x)).

Table of values

n a(n)
1 1
2 2
3 3
4 8
5 25
6 96
7 427
8 2176
9 12465
10 79360
11 555731
12 4245504
13 35135945
14 313155584
15 2990414715
16 30460116992
17 329655706465
18 3777576173568
19 45692713833379
20 581777702256640
21 7777794952988025
22 108932957168730112
23 1595024111042171723
24 24370173276164456448

List of values

[1, 2, 3, 8, 25, 96, 427, 2176, 12465, 79360, 555731, 4245504, 35135945, 313155584, 2990414715, 30460116992, 329655706465, 3777576173568, 45692713833379, 581777702256640, 7777794952988025, 108932957168730112, 1595024111042171723, 24370173276164456448]

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

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