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.

A159740 Number of permutations of 9 indistinguishable copies of 1..n arranged in a circle with exactly 1 local maximum.

Table of values

n a(n)
2 18
3 270
4 3600
5 45000
6 540000
7 6300000
8 72000000
9 810000000
10 9000000000
11 99000000000
12 1080000000000
13 11700000000000
14 126000000000000
15 1350000000000000
16 14400000000000000
17 153000000000000000

List of values

[18, 270, 3600, 45000, 540000, 6300000, 72000000, 810000000, 9000000000, 99000000000, 1080000000000, 11700000000000, 126000000000000, 1350000000000000, 14400000000000000, 153000000000000000]

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

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