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A284081 Number of 7Xn 0..1 arrays with no 1 equal to more than three of its horizontal, diagonal and antidiagonal neighbors, with the exception of exactly two elements. 1
0, 0, 353608, 48994058, 6011835223, 700044712076, 74965549398304, 7663959789277668, 759541318384819140, 73293744586522740828, 6926137628336309991716, 643615455040297408956707 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

COMMENTS

Row 7 of A284075.

LINKS

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

EXAMPLE

Some solutions for n=3

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

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

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

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

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

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

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

CROSSREFS

Cf. A284075.

Sequence in context: A140942 A294858 A274900 * A050515 A179709 A186217

Adjacent sequences:  A284078 A284079 A284080 * A284082 A284083 A284084

KEYWORD

nonn

AUTHOR

R. H. Hardin, Mar 19 2017

STATUS

approved

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Last modified August 16 00:08 EDT 2022. Contains 356150 sequences. (Running on oeis4.)