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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.

A216313 Total number of cycles in all partial permutations of {1,2,...,n}.

Table of values

n a(n)
0 0
1 1
2 5
3 29
4 200
5 1609
6 14809
7 153453
8 1767240
9 22383681
10 309123733
11 4621295117
12 74331184256
13 1279614456041
14 23470211031097
15 456836915073277
16 9403557603534960
17 204061142480099649
18 4655419598313230277
19 111378768040665868093
20 2788108620329147151896

List of values

[0, 1, 5, 29, 200, 1609, 14809, 153453, 1767240, 22383681, 309123733, 4621295117, 74331184256, 1279614456041, 23470211031097, 456836915073277, 9403557603534960, 204061142480099649, 4655419598313230277, 111378768040665868093, 2788108620329147151896]

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

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