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.

A280158 Number of nX5 0..1 arrays with no element unequal to a strict majority of its horizontal, vertical and antidiagonal neighbors, with the exception of exactly one element, and with new values introduced in order 0 sequentially upwards.

Original entry on oeis.org

5, 40, 305, 1854, 10677, 58852, 318220, 1695030, 8941285, 46760710, 242970442, 1255597078, 6458360287, 33085037590, 168885713050, 859370947890, 4360537440625, 22069557056618, 111441207638795, 561547964534696
Offset: 1

Views

Author

R. H. Hardin, Dec 27 2016

Keywords

Comments

Column 5 of A280161.

Examples

			Some solutions for n=4
..0..0..0..1..1. .0..0..1..1..1. .0..0..1..1..1. .0..0..1..1..1
..1..1..0..0..1. .0..0..1..1..1. .0..1..1..0..0. .0..0..1..1..1
..1..1..0..0..1. .1..0..0..0..1. .1..1..0..0..0. .0..0..1..0..0
..1..0..0..1..1. .0..0..0..0..1. .1..1..0..0..0. .0..0..0..0..0
		

Crossrefs

Cf. A280161.

Formula

Empirical recurrence of order 70 (see link above)