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.

A217326 Number of self-inverse permutations in S_n with longest increasing subsequence of length 6.

Table of values

n a(n)
6 1
7 6
8 41
9 209
10 1106
11 5323
12 26069
13 122901
14 585922
15 2747977
16 13000269
17 61088173
18 289186846
19 1366147708
20 6496681304
21 30905464864
22 147912712795
23 709073550307
24 3418258506885
25 16517431269189
26 80230551304034
27 390774361811783
28 1912602871119956
29 9388456361080840

List of values

[1, 6, 41, 209, 1106, 5323, 26069, 122901, 585922, 2747977, 13000269, 61088173, 289186846, 1366147708, 6496681304, 30905464864, 147912712795, 709073550307, 3418258506885, 16517431269189, 80230551304034, 390774361811783, 1912602871119956, 9388456361080840]

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

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