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.

A221197 Number of n X 4 arrays of occupancy after each element moves to some horizontal, diagonal or antidiagonal neighbor, with no occupancy greater than 2.

Table of values

n a(n)
1 4
2 196
3 9025
4 427716
5 20277009
6 961434049
7 45583531009
8 2161117565476
9 102456463038084
10 4857310924636921
11 230276948274214416
12 10917021188851445889
13 517556134069075087921
14 24536386370101531606209

List of values

[4, 196, 9025, 427716, 20277009, 961434049, 45583531009, 2161117565476, 102456463038084, 4857310924636921, 230276948274214416, 10917021188851445889, 517556134069075087921, 24536386370101531606209]

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

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