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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. 1
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
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
KEYWORD
nonn
AUTHOR
R. H. Hardin, Mar 17 2017
STATUS
approved

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Last modified February 20 21:52 EST 2024. Contains 370219 sequences. (Running on oeis4.)