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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.

A222441 Number of nX5 0..3 arrays with entries increasing mod 4 by 0, 1 or 2 rightwards and downwards, starting with upper left zero.

Table of values

n a(n)
1 81
2 7203
3 642249
4 57289767
5 5110723191
6 455924913093
7 40672916404629
8 3628419487925547
9 323690312271131451
10 28876324830999722133
11 2576049100980154511889
12 229808641254065144560647

List of values

[81, 7203, 642249, 57289767, 5110723191, 455924913093, 40672916404629, 3628419487925547, 323690312271131451, 28876324830999722133, 2576049100980154511889, 229808641254065144560647]

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

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