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.

A159726 Number of permutations of 3 indistinguishable copies of 1..n arranged in a circle with exactly 6 local maxima.

Table of values

n a(n)
1 0
2 0
3 0
4 1256
5 24483200
6 55067152128
7 57615626479712
8 41069543783239872
9 23516539818144774912
10 11776285299306762639680
11 5412720242324956991133440
12 2351154988094363114287766016
13 983075755980176565659196488192
14 400400884398187607904444939190272

List of values

[0, 0, 0, 1256, 24483200, 55067152128, 57615626479712, 41069543783239872, 23516539818144774912, 11776285299306762639680, 5412720242324956991133440, 2351154988094363114287766016, 983075755980176565659196488192, 400400884398187607904444939190272]

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

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