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.

A263885 Number of permutations of [n] containing exactly one occurrence of the consecutive pattern 132.

Table of values

n a(n)
3 1
4 8
5 54
6 368
7 2649
8 20544
9 172596
10 1569408
11 15398829
12 162412416
13 1834081890
14 22093090560
15 282889238253
16 3837991053312
17 55010010678120
18 830731742908416
19 13185328329110745
20 219457733809563648
21 3822426663111579150
22 69538569862816419840
23 1318999546575572747265

List of values

[1, 8, 54, 368, 2649, 20544, 172596, 1569408, 15398829, 162412416, 1834081890, 22093090560, 282889238253, 3837991053312, 55010010678120, 830731742908416, 13185328329110745, 219457733809563648, 3822426663111579150, 69538569862816419840, 1318999546575572747265]

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

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