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.

A221323 Number of n X 3 arrays of occupancy after each element stays put or moves to some horizontal or antidiagonal neighbor, with no occupancy greater than 2.

Table of values

n a(n)
1 7
2 119
3 2008
4 33873
5 571358
6 9637322
7 162555929
8 2741882383
9 46248186229
10 780082534460
11 13157894317753
12 221938287447408
13 3743501973486176
14 63142809559541159
15 1065049364666447387
16 17964518161956501475

List of values

[7, 119, 2008, 33873, 571358, 9637322, 162555929, 2741882383, 46248186229, 780082534460, 13157894317753, 221938287447408, 3743501973486176, 63142809559541159, 1065049364666447387, 17964518161956501475]

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

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