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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.

A036717 G.f. satisfies A(x) = 1 + x*cycle_index(Alt(4), A(x)).

Table of values

n a(n)
0 1
1 1
2 1
3 2
4 4
5 9
6 19
7 47
8 113
9 287
10 733
11 1920
12 5064
13 13557
14 36553
15 99455
16 272293
17 750262
18 2077751
19 5781971
20 16156866
21 45321635
22 127566689
23 360191846
24 1019926954
25 2895648896
26 8240832570
27 23505344031
28 67183161970
29 192393195097
30 551946691853

List of values

[1, 1, 1, 2, 4, 9, 19, 47, 113, 287, 733, 1920, 5064, 13557, 36553, 99455, 272293, 750262, 2077751, 5781971, 16156866, 45321635, 127566689, 360191846, 1019926954, 2895648896, 8240832570, 23505344031, 67183161970, 192393195097, 551946691853]

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

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