cp's OEIS Frontend

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.

A032278 Number of ways to partition n elements into pie slices each with at least 2 elements allowing the pie to be turned over.

Table of values

n a(n)
1 0
2 1
3 1
4 2
5 2
6 4
7 4
8 7
9 8
10 13
11 15
12 25
13 30
14 48
15 63
16 98
17 132
18 208
19 290
20 454
21 656
22 1021
23 1509
24 2358
25 3544
26 5535
27 8441
28 13200
29 20318
30 31835
31 49352
32 77435
33 120710
34 189673
35 296853
36 467159
37 733362
38 1155646
39 1818593
40 2869377
41 4524080

List of values

[0, 1, 1, 2, 2, 4, 4, 7, 8, 13, 15, 25, 30, 48, 63, 98, 132, 208, 290, 454, 656, 1021, 1509, 2358, 3544, 5535, 8441, 13200, 20318, 31835, 49352, 77435, 120710, 189673, 296853, 467159, 733362, 1155646, 1818593, 2869377, 4524080]