cp's OEIS Frontend

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.

A285862 Number of permutations of [2n] with n ordered cycles such that equal-sized cycles are ordered with increasing least elements.

Table of values

n a(n)
0 1
1 1
2 19
3 1005
4 62601
5 6061545
6 868380535
7 142349568361
8 27564092244689
9 6325532235438273
10 1673378033771898675
11 505141951803309946125
12 170002056228253072537065
13 63255335047795174479833625
14 25805276337820748477042392695
15 11427131417576257617280878155625

List of values

[1, 1, 19, 1005, 62601, 6061545, 868380535, 142349568361, 27564092244689, 6325532235438273, 1673378033771898675, 505141951803309946125, 170002056228253072537065, 63255335047795174479833625, 25805276337820748477042392695, 11427131417576257617280878155625]

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

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