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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.

A201594 E.g.f. satisfies: A(x) = 1/(1 - tan( x*A(x) )).

Table of values

n a(n)
0 1
1 1
2 4
3 32
4 384
5 6176
6 124928
7 3049472
8 87265280
9 2865848320
10 106258440192
11 4391008927744
12 200131590356992
13 9973976451383296
14 539604322034384896
15 31496226303081709568
16 1972926888464596598784
17 132015791534989604028416
18 9398128264859870497341440
19 709248762402156849800413184

List of values

[1, 1, 4, 32, 384, 6176, 124928, 3049472, 87265280, 2865848320, 106258440192, 4391008927744, 200131590356992, 9973976451383296, 539604322034384896, 31496226303081709568, 1972926888464596598784, 132015791534989604028416, 9398128264859870497341440, 709248762402156849800413184]

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

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