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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.

A060223 Number of orbits of length n under the map whose periodic points are counted by A000670.

Table of values

n a(n)
0 1
1 1
2 1
3 4
4 18
5 108
6 778
7 6756
8 68220
9 787472
10 10224702
11 147512052
12 2340963570
13 40527565260
14 760095923082
15 15352212731820
16 332228417589720
17 7668868648772700
18 188085259069430744
19 4884294069438337428
20 133884389812214097774
21 3863086904690670182596

List of values

[1, 1, 1, 4, 18, 108, 778, 6756, 68220, 787472, 10224702, 147512052, 2340963570, 40527565260, 760095923082, 15352212731820, 332228417589720, 7668868648772700, 188085259069430744, 4884294069438337428, 133884389812214097774, 3863086904690670182596]

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

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