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.

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A297676 Number of n X n 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 0, 1 or 4 neighboring 1's.

Original entry on oeis.org

2, 11, 150, 4633, 401678, 78957968, 41030621948, 49892385650107, 157266548152111938, 1187668466030040777022, 22731639382952184172610914, 1058867886808501107531538859306
Offset: 1

Views

Author

R. H. Hardin, Jan 03 2018

Keywords

Comments

Diagonal of A297682.

Examples

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

Crossrefs

Cf. A297682.
Previous Showing 11-11 of 11 results.

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

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