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.

A224248 Number of permutations in S_n containing exactly one increasing subsequence of length 5.

Table of values

n a(n)
0 0
1 0
2 0
3 0
4 0
5 1
6 20
7 270
8 3142
9 34291
10 364462
11 3844051
12 40632886
13 432715409
14 4655417038
15 50667480496
16 558143676522
17 6223527776874
18 70228214538096
19 801705888742781
20 9254554670121572
21 107975393459449243
22 1272651313142352772
23 15145990284267530992

List of values

[0, 0, 0, 0, 0, 1, 20, 270, 3142, 34291, 364462, 3844051, 40632886, 432715409, 4655417038, 50667480496, 558143676522, 6223527776874, 70228214538096, 801705888742781, 9254554670121572, 107975393459449243, 1272651313142352772, 15145990284267530992]

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

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