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.

A231166 Number of permutations of [n] avoiding simultaneously consecutive patterns 1243, 1342, and 1324.

Table of values

n a(n)
0 1
1 1
2 2
3 6
4 21
5 91
6 467
7 2755
8 18523
9 139740
10 1169616
11 10763807
12 108028386
13 1174391384
14 13748315494
15 172439034531
16 2306986699190
17 32792999417180
18 493559520202535
19 7841127918788283
20 131127477517244419
21 2302491655047553206
22 42355105188617740229

List of values

[1, 1, 2, 6, 21, 91, 467, 2755, 18523, 139740, 1169616, 10763807, 108028386, 1174391384, 13748315494, 172439034531, 2306986699190, 32792999417180, 493559520202535, 7841127918788283, 131127477517244419, 2302491655047553206, 42355105188617740229]

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

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