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.

A297600 Number of 7Xn 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 1 or 5 neighboring 1s.

Original entry on oeis.org

1, 178, 1701, 6962, 93150, 1172288, 9403199, 85828150, 919035936, 8853487049, 82411356392, 809231737581, 7936987592888, 76162052363914, 735775369925651, 7159378085264000, 69324523431873026, 670205953180878528
Offset: 1

Views

Author

R. H. Hardin, Jan 01 2018

Keywords

Comments

Row 7 of A297595.

Examples

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

Crossrefs

Cf. A297595.