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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.

A000834 Expansion of exp(x)*(1 + tan(x))/(1 - tan(x)).

Table of values

n a(n)
0 1
1 3
2 9
3 35
4 177
5 1123
6 8569
7 76355
8 777697
9 8911683
10 113466729
11 1589173475
12 24280777617
13 401898209443
14 7163977596889
15 136821894075395
16 2787312733887937
17 60331585563062403
18 1382698089425999049

List of values

[1, 3, 9, 35, 177, 1123, 8569, 76355, 777697, 8911683, 113466729, 1589173475, 24280777617, 401898209443, 7163977596889, 136821894075395, 2787312733887937, 60331585563062403, 1382698089425999049]

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

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