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.

A204698 Number of n X n 0..2 arrays with no occurrence of three equal elements in a row horizontally, vertically or nw-to-se diagonally, and new values 0..2 introduced in row major order.

Table of values

n a(n)
1 1
2 14
3 1417
4 835135
5 2389914827
6 34925753412578
7 2568926644225402978
8 954699753721419299486986

List of values

[1, 14, 1417, 835135, 2389914827, 34925753412578, 2568926644225402978, 954699753721419299486986]

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

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