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.

A158423 Number of permutations of 1..n containing the relative rank sequence { 23145 } at any spacing.

Table of values

n a(n)
5 1
6 26
7 459
8 7034
9 101953
10 1454402
11 20863742
12 304906732
13 4578822750
14 71092815624
15 1146499731400
16 19270199314388
17 338394827020511
18 6218127006568582
19 119650035623211443
20 2410982527835022898
21 50846926185692443237
22 1121251553648267523078
23 25820703260713964268656
24 620088145746453017943268

List of values

[1, 26, 459, 7034, 101953, 1454402, 20863742, 304906732, 4578822750, 71092815624, 1146499731400, 19270199314388, 338394827020511, 6218127006568582, 119650035623211443, 2410982527835022898, 50846926185692443237, 1121251553648267523078, 25820703260713964268656, 620088145746453017943268]

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

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