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.

A000363 Number of permutations of [n] with exactly 2 increasing runs of length at least 2.

Table of values

n a(n)
4 5
5 61
6 479
7 3111
8 18270
9 101166
10 540242
11 2819266
12 14494859
13 73802835
14 373398489
15 1881341265
16 9453340172
17 47417364268
18 237571096820
19 1189405165908
20 5951965440609
21 29775517732665
22 148927275340835
23 744793282001995

List of values

[5, 61, 479, 3111, 18270, 101166, 540242, 2819266, 14494859, 73802835, 373398489, 1881341265, 9453340172, 47417364268, 237571096820, 1189405165908, 5951965440609, 29775517732665, 148927275340835, 744793282001995]

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

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