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.

A152517 1/56 of the number of permutations of 7 indistinguishable copies of 1..n with exactly 2 local maxima.

Table of values

n a(n)
1 0
2 3
3 412
4 50080
5 6016512
6 722051072
7 86646800384
8 10397622337536
9 1247714738176000
10 149725769101213696
11 17967092296776155136
12 2156051075653940805632
13 258726129078829378961408
14 31047135489462617851822080
15 3725656258735540805375623168
16 447078751048265125343493357568

List of values

[0, 3, 412, 50080, 6016512, 722051072, 86646800384, 10397622337536, 1247714738176000, 149725769101213696, 17967092296776155136, 2156051075653940805632, 258726129078829378961408, 31047135489462617851822080, 3725656258735540805375623168, 447078751048265125343493357568]

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

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