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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.

A367042 G.f. satisfies A(x) = 1 + x^3 + x*A(x)^2.

Table of values

n a(n)
0 1
1 1
2 2
3 6
4 16
5 48
6 152
7 500
8 1688
9 5816
10 20368
11 72288
12 259424
13 939808
14 3432192
15 12622416
16 46706144
17 173762016
18 649569216
19 2438748864
20 9191656192
21 34765298944
22 131912452864
23 501987944832
24 1915417307392
25 7326620001536
26 28088736525824
27 107913607531520

List of values

[1, 1, 2, 6, 16, 48, 152, 500, 1688, 5816, 20368, 72288, 259424, 939808, 3432192, 12622416, 46706144, 173762016, 649569216, 2438748864, 9191656192, 34765298944, 131912452864, 501987944832, 1915417307392, 7326620001536, 28088736525824, 107913607531520]

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

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