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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.

A209866 a(n) = least common multiple of all cycle sizes in range [2^(n-1),(2^n)-1] of permutation A209861/A209862.

Table of values

n a(n)
0 1
1 1
2 1
3 1
4 2
5 5
6 24
7 26
8 672
9 246
10 3755388
11 13827240
12 1768910220
13 99034598880
14 1463488641762840
15 612823600
16 171768365608799778
17 16338317307187487976
18 27491145139913884194480
19 14794457633180140325810400
20 2084886621890359572790082258379649440

List of values

[1, 1, 1, 1, 2, 5, 24, 26, 672, 246, 3755388, 13827240, 1768910220, 99034598880, 1463488641762840, 612823600, 171768365608799778, 16338317307187487976, 27491145139913884194480, 14794457633180140325810400, 2084886621890359572790082258379649440]

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

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