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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A297588 Number of 7Xn 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 1 or 4 neighboring 1s.

Original entry on oeis.org

1, 178, 3854, 17549, 171543, 3230902, 38609160, 348140132, 4059598106, 52019909493, 586271189408, 6378535786438, 74263762213809, 871302311717772, 9894632611196172, 112311237616769754, 1295286294924141697
Offset: 1

Views

Author

R. H. Hardin, Jan 01 2018

Keywords

Comments

Row 7 of A297582.

Examples

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

Links

Crossrefs

Cf. A297582.

A297576 Number of n X n 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 1 or 4 neighboring 1's.

Original entry on oeis.org

1, 5, 36, 254, 5800, 395011, 38609160, 5752782514, 2136636243308, 1857722960742588, 2730521146982947356, 7180017772945965801201
Offset: 1

Views

Author

R. H. Hardin, Jan 01 2018

Keywords

Comments

Diagonal of A297582.

Examples

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

Crossrefs

Cf. A297582.
Previous Showing 11-12 of 12 results.

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

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