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.

A204682 Number of n X 5 0..3 arrays with no occurrence of three equal elements in a row horizontally, vertically, diagonally or antidiagonally, and new values 0..3 introduced in row major order.

Table of values

n a(n)
1 40
2 31168
3 12711292
4 5770321516
5 2579588216958
6 1155411237719424
7 517329649988490420
8 231643442002878488571

List of values

[40, 31168, 12711292, 5770321516, 2579588216958, 1155411237719424, 517329649988490420, 231643442002878488571]

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

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