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.

A152507 1/5 of the number of permutations of 4 indistinguishable copies of 1..n with exactly 5 local maxima.

Table of values

n a(n)
1 0
2 0
3 1268
4 5299607
5 8184246829
6 8518545179048
7 7375381060406666
8 5823800163847281553
9 4385124494281967244359
10 3220844410144729325085834
11 2335142573256061888321206228
12 1681577911560502131835994578291
13 1206702021031355908214429714812273

List of values

[0, 0, 1268, 5299607, 8184246829, 8518545179048, 7375381060406666, 5823800163847281553, 4385124494281967244359, 3220844410144729325085834, 2335142573256061888321206228, 1681577911560502131835994578291, 1206702021031355908214429714812273]

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

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