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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.

A001005 Number of ways of partitioning n points on a circle into subsets only of sizes 2 and 3.

Table of values

n a(n)
0 1
1 0
2 1
3 1
4 2
5 5
6 8
7 21
8 42
9 96
10 222
11 495
12 1177
13 2717
14 6435
15 15288
16 36374
17 87516
18 210494
19 509694
20 1237736
21 3014882
22 7370860
23 18059899
24 44379535
25 109298070
26 269766655
27 667224480
28 1653266565
29 4103910930
30 10203669285
31 25408828065
32 63364046190
33 158229645720
34 395632288590
35 990419552730

List of values

[1, 0, 1, 1, 2, 5, 8, 21, 42, 96, 222, 495, 1177, 2717, 6435, 15288, 36374, 87516, 210494, 509694, 1237736, 3014882, 7370860, 18059899, 44379535, 109298070, 269766655, 667224480, 1653266565, 4103910930, 10203669285, 25408828065, 63364046190, 158229645720, 395632288590, 990419552730]

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

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