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.

A152513 1/21 of the number of permutations of 6 indistinguishable copies of 1..n with exactly 2 local maxima.

Table of values

n a(n)
1 0
2 5
3 497
4 42581
5 3584693
6 301183841
7 25300030889
8 2125207418285
9 178517461842461
10 14995467100301177
11 1259619238806161681
12 105808016078078472389
13 8887873350698981879429
14 746581361459780256986513
15 62712834362629583374730873
16 5267878086460945365330876893

List of values

[0, 5, 497, 42581, 3584693, 301183841, 25300030889, 2125207418285, 178517461842461, 14995467100301177, 1259619238806161681, 105808016078078472389, 8887873350698981879429, 746581361459780256986513, 62712834362629583374730873, 5267878086460945365330876893]

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

Content is available under The OEIS End-User License Agreement.