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.

A264455 Number of permutations of [n] with exactly six (possibly overlapping) occurrences of the generalized pattern 12-3.

Table of values

n a(n)
5 1
6 17
7 238
8 2956
9 33343
10 355182
11 3681762
12 37839385
13 389940538
14 4056942189
15 42796503464
16 458995025669
17 5013561835833
18 55832699192796
19 634322118799677
20 7354538207075076
21 87032355679553323
22 1051183375285792257
23 12956782873283747998
24 162950022525866642259

List of values

[1, 17, 238, 2956, 33343, 355182, 3681762, 37839385, 389940538, 4056942189, 42796503464, 458995025669, 5013561835833, 55832699192796, 634322118799677, 7354538207075076, 87032355679553323, 1051183375285792257, 12956782873283747998, 162950022525866642259]

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

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