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.

A268071 Number of nX4 0..3 arrays with every repeated value in every row and column unequal to the previous repeated value, and new values introduced in row-major sequential order.

Table of values

n a(n)
1 12
2 2191
3 381958
4 70985206
5 12341773443
6 2135811945390
7 360625109847257
8 60269655478497862
9 9949083335191755757
10 1629156960066795552208
11 264820932563055654137153
12 42807217788424085785910968

List of values

[12, 2191, 381958, 70985206, 12341773443, 2135811945390, 360625109847257, 60269655478497862, 9949083335191755757, 1629156960066795552208, 264820932563055654137153, 42807217788424085785910968]

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

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