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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.

A272603 Number of permutations of [n] whose cycle lengths are factorials.

Table of values

n a(n)
0 1
1 1
2 2
3 4
4 10
5 26
6 196
7 1072
8 7484
9 42940
10 261496
11 1477136
12 15219832
13 134828344
14 1488515120
15 13692017536
16 130252442896
17 1123580329232
18 14639510308384
19 173489066401600
20 2528654220104096
21 31472160333513376
22 402634734214583872
23 4645625988351336704
24 25925035549644280991680

List of values

[1, 1, 2, 4, 10, 26, 196, 1072, 7484, 42940, 261496, 1477136, 15219832, 134828344, 1488515120, 13692017536, 130252442896, 1123580329232, 14639510308384, 173489066401600, 2528654220104096, 31472160333513376, 402634734214583872, 4645625988351336704, 25925035549644280991680]

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

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