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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.

A094233 Number of closed walks of length n at a vertex of the cyclic graph on 9 nodes C_9.

Table of values

n a(n)
0 1
1 0
2 2
3 0
4 6
5 0
6 20
7 0
8 70
9 2
10 252
11 22
12 924
13 156
14 3432
15 910
16 12870
17 4760
18 48622
19 23256
20 184796
21 108528
22 705894
23 490314
24 2708204
25 2163150
26 10430500
27 9373652
28 40313160
29 40060078
30 156305070
31 169345560
32 607812102
33 709645552
34 2369918628
35 2952780320

List of values

[1, 0, 2, 0, 6, 0, 20, 0, 70, 2, 252, 22, 924, 156, 3432, 910, 12870, 4760, 48622, 23256, 184796, 108528, 705894, 490314, 2708204, 2163150, 10430500, 9373652, 40313160, 40060078, 156305070, 169345560, 607812102, 709645552, 2369918628, 2952780320]

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

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