A283863 - OEIS

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A283863

Number of 7Xn 0..1 arrays with no 1 equal to more than three of its horizontal, diagonal and antidiagonal neighbors.

128, 16384, 955680, 71903903, 5921518755, 457711375590, 35481195059121, 2782923466639665, 217518560684113038, 16981222926091090679, 1326999476774635673172, 103695192517969043697972

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

COMMENTS

Row 7 of A283857.

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..210

EXAMPLE

Some solutions for n=2

..1..1. .1..0. .0..1. .0..1. .0..0. .1..1. .1..1. .1..0. .0..1. .0..1

..0..1. .0..1. .0..1. .1..0. .1..0. .1..0. .0..1. .0..1. .0..1. .0..1

..0..0. .0..0. .0..1. .0..0. .1..1. .1..0. .0..1. .0..1. .0..0. .1..1

..0..0. .0..1. .0..1. .0..1. .1..0. .1..1. .1..1. .0..0. .1..1. .1..0

..0..1. .1..1. .1..0. .1..0. .1..0. .0..1. .1..1. .0..1. .0..0. .1..0

..1..0. .0..1. .0..1. .1..0. .0..1. .1..0. .1..1. .0..0. .0..1. .0..0

..1..1. .1..1. .1..0. .0..0. .0..0. .0..0. .0..1. .0..1. .0..0. .1..1

CROSSREFS

Cf. A283857.

Sequence in context: A188908 A189109 A297380 * A223568 A144321 A051251

Adjacent sequences: A283860 A283861 A283862 * A283864 A283865 A283866

KEYWORD

nonn

AUTHOR

R. H. Hardin, Mar 17 2017

STATUS

approved