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A298548
Number of n X n 0..1 arrays with every element equal to 0, 2, 3, 5 or 7 king-move adjacent elements, with upper left element zero.
0
1, 5, 4, 33, 341, 4157, 85227, 2586208, 113602418, 7377197638
OFFSET
1,2
COMMENTS
Diagonal of A298554.
EXAMPLE
Some solutions for n=7
..0..1..1..1..1..1..0. .0..0..1..0..1..1..1. .0..0..1..0..1..0..0
..0..0..1..0..0..1..1. .0..1..0..1..0..1..0. .0..0..1..1..1..0..1
..1..1..1..0..1..0..1. .0..1..0..1..0..1..1. .1..1..1..1..1..1..1
..0..1..1..1..1..0..1. .1..0..0..1..0..0..1. .1..0..1..0..1..0..0
..1..1..1..1..1..1..0. .1..0..0..0..1..1..0. .0..1..0..1..0..1..0
..0..0..1..1..0..0..0. .1..0..0..0..1..0..0. .0..0..0..0..1..1..0
..0..0..1..0..0..1..0. .1..1..1..1..1..1..0. .1..0..1..0..0..0..0
CROSSREFS
Cf. A298554.
Sequence in context: A237648 A091001 A297936 * A078811 A093399 A123233
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 21 2018
STATUS
approved