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.

A132889 Sum of the lengths of the longest increasing subsequence over all 321-avoiding permutations of [n].

Table of values

n a(n)
1 1
2 3
3 11
4 39
5 144
6 530
7 1987
8 7455
9 28268
10 107334
11 410354
12 1570954
13 6042984
14 23273172
15 89948835
16 348000975
17 1350028020
18 5241881150
19 20396787070
20 79426533758
21 309829067496
22 1209384071532
23 4727454837846
24 18490127530394

List of values

[1, 3, 11, 39, 144, 530, 1987, 7455, 28268, 107334, 410354, 1570954, 6042984, 23273172, 89948835, 348000975, 1350028020, 5241881150, 20396787070, 79426533758, 309829067496, 1209384071532, 4727454837846, 18490127530394]

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

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