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A298134 Number of n X n 0..1 arrays with every element equal to 2, 3, 5 or 7 king-move adjacent elements, with upper left element zero. 0
0, 1, 0, 10, 88, 917, 14422, 467043, 17828062, 1081228309 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,4

COMMENTS

Diagonal of A298139.

LINKS

Table of n, a(n) for n=1..10.

EXAMPLE

Some solutions for n=7

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

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

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

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

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

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

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

CROSSREFS

Cf. A298139.

Sequence in context: A165148 A287828 A264320 * A163030 A302149 A269008

Adjacent sequences:  A298131 A298132 A298133 * A298135 A298136 A298137

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 13 2018

STATUS

approved

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Last modified July 14 19:48 EDT 2020. Contains 335729 sequences. (Running on oeis4.)