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.

A302900 Number of permutations of [n] having exactly seven alternating descents.

Table of values

n a(n)
8 1385
9 21682
10 350240
11 4945368
12 70145634
13 992272308
14 14322115212
15 211595659320
16 3216832016019
17 50412205403030
18 815486339550108
19 13622914005990480
20 235041722344009380
21 4187522527966916520
22 77010173788311008040
23 1461190162226869057872
24 28588437379997078589117

List of values

[1385, 21682, 350240, 4945368, 70145634, 992272308, 14322115212, 211595659320, 3216832016019, 50412205403030, 815486339550108, 13622914005990480, 235041722344009380, 4187522527966916520, 77010173788311008040, 1461190162226869057872, 28588437379997078589117]

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

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