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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
OFFSET
1,4
COMMENTS
Diagonal of A298139.
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
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 13 2018
STATUS
approved