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.

Previous Showing 11-11 of 11 results.

A302206 Number of n X n 0..1 arrays with every element equal to 0, 2 or 3 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

Original entry on oeis.org

1, 2, 16, 7, 448, 1395, 55922, 3509969, 73189971, 33707749345, 2102356505182
Offset: 1

Views

Author

R. H. Hardin, Apr 03 2018

Keywords

Comments

Diagonal of A302212.

Examples

			Some solutions for n=5
..0..1..0..0..0. .0..1..0..0..1. .0..0..0..1..0. .0..0..1..1..0
..1..1..1..0..1. .0..1..0..0..1. .1..0..1..1..1. .0..0..1..1..0
..0..1..1..0..1. .1..1..1..0..0. .1..0..0..1..0. .1..0..1..1..0
..0..1..0..0..0. .0..0..0..1..1. .1..0..0..1..0. .0..0..0..1..1
..1..1..1..0..1. .0..0..1..1..0. .1..0..0..1..0. .1..0..0..1..1

Crossrefs

Cf. A302212.
Previous Showing 11-11 of 11 results.

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

Content is available under The OEIS End-User License Agreement.