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.

A268050 Number of 3Xn 0..n arrays with every repeated value in every row unequal to, and in every column equal to, the previous repeated value, and new values introduced in row-major sequential order.

Table of values

n a(n)
1 4
2 122
3 9054
4 1650058
5 525124941
6 262999737747
7 190270786192101
8 188077605422375047
9 243772201296637313108
10 401542086990450371906244

List of values

[4, 122, 9054, 1650058, 525124941, 262999737747, 190270786192101, 188077605422375047, 243772201296637313108, 401542086990450371906244]

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

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