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.

A337495 Maximum number of preimages that a permutation of length n can have under the consecutive-123-avoiding stack-sorting map.

Table of values

n a(n)
0 1
1 1
2 1
3 2
4 3
5 4
6 7
7 11
8 16
9 26
10 42

List of values

[1, 1, 1, 2, 3, 4, 7, 11, 16, 26, 42]