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.

A152516 1/21 of the number of permutations of 6 indistinguishable copies of 1..n with exactly 5 local maxima.

Table of values

n a(n)
1 0
2 5
3 285365
4 3328373375
5 23122804891093
6 132106319858700205
7 697701196338306192217
8 3568377130807709398000279
9 18013809185839252548978200161
10 90462608845509339028810174966669
11 453352973288072573009512458761236141
12 2270154484704085339079608424120307696559

List of values

[0, 5, 285365, 3328373375, 23122804891093, 132106319858700205, 697701196338306192217, 3568377130807709398000279, 18013809185839252548978200161, 90462608845509339028810174966669, 453352973288072573009512458761236141, 2270154484704085339079608424120307696559]

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

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