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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.

A221242 Number of nX4 arrays of occupancy after each element moves to some horizontal, diagonal or antidiagonal neighbor.

Table of values

n a(n)
1 4
2 484
3 45369
4 4096576
5 367565584
6 32940435025
7 2951293792489
8 264404315544196
9 23687401278880161
10 2122092173450945536
11 190112409243526686921
12 17031641464052384231241
13 1525817148915719009233321

List of values

[4, 484, 45369, 4096576, 367565584, 32940435025, 2951293792489, 264404315544196, 23687401278880161, 2122092173450945536, 190112409243526686921, 17031641464052384231241, 1525817148915719009233321]

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

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