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.

A302902 Number of permutations of [n] having exactly nine alternating descents.

Table of values

n a(n)
10 50521
11 1160026
12 25260211
13 473324450
14 8650769675
15 154898419006
16 2781436057021
17 50412205403030
18 928559550102410
19 17440458896525180
20 334876925319944690
21 6583281405926363500
22 132633340608724861210
23 2740015852551381054980
24 58057801350608276240150

List of values

[50521, 1160026, 25260211, 473324450, 8650769675, 154898419006, 2781436057021, 50412205403030, 928559550102410, 17440458896525180, 334876925319944690, 6583281405926363500, 132633340608724861210, 2740015852551381054980, 58057801350608276240150]

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

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