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.

A268871 Number of sequences in {1,...,n}^n with longest increasing subsequence of length four.

Table of values

n a(n)
4 1
5 96
6 4501
7 161876
8 5179791
9 157279903
10 4678809652
11 138712471261
12 4137680201304
13 124857897038252
14 3823102196348462
15 118974270767513360
16 3765555655525713427
17 121224440332571253975
18 3968401901135750428284
19 132031213465208461376221
20 4461459275271493097987384

List of values

[1, 96, 4501, 161876, 5179791, 157279903, 4678809652, 138712471261, 4137680201304, 124857897038252, 3823102196348462, 118974270767513360, 3765555655525713427, 121224440332571253975, 3968401901135750428284, 132031213465208461376221, 4461459275271493097987384]

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

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