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.

A302904 Number of permutations of [2n] having exactly n-1 alternating descents.

Table of values

n a(n)
0 1
1 1
2 7
3 182
4 8699
5 704834
6 84889638
7 14322115212
8 3216832016019
9 928559550102410
10 334876925319944690
11 147563833511292247796
12 78009671642511668089822
13 48728981875112003682759892
14 35506576774281843111748649644
15 29848802048200930275501944893080

List of values

[1, 1, 7, 182, 8699, 704834, 84889638, 14322115212, 3216832016019, 928559550102410, 334876925319944690, 147563833511292247796, 78009671642511668089822, 48728981875112003682759892, 35506576774281843111748649644, 29848802048200930275501944893080]

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

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