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.

A000434 Number of permutations of [n] in which the longest increasing run has length 4.

Table of values

n a(n)
1 0
2 0
3 0
4 1
5 8
6 67
7 602
8 5811
9 60875
10 690729
11 8457285
12 111323149
13 1569068565
14 23592426102
15 377105857043
16 6387313185576
17 114303481217657
18 2155348564847332
19 42719058006864690
20 887953677898186108
21 19316200230609433690
22 438920223893512987430

List of values

[0, 0, 0, 1, 8, 67, 602, 5811, 60875, 690729, 8457285, 111323149, 1569068565, 23592426102, 377105857043, 6387313185576, 114303481217657, 2155348564847332, 42719058006864690, 887953677898186108, 19316200230609433690, 438920223893512987430]

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

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