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.

A269218 Number of 5Xn 0..3 arrays with some element plus some horizontally, diagonally or antidiagonally adjacent neighbor totalling three exactly once.

Table of values

n a(n)
1 0
2 103488
3 6712704
4 474091776
5 30541426560
6 1910809190712
7 116322554833728
8 6948456736101264
9 408916976890552416
10 23782890276972969552
11 1370013927382609217472
12 78294173211595616892096

List of values

[0, 103488, 6712704, 474091776, 30541426560, 1910809190712, 116322554833728, 6948456736101264, 408916976890552416, 23782890276972969552, 1370013927382609217472, 78294173211595616892096]

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

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