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A304663
Number of n X n 0..1 arrays with every element unequal to 0, 1, 3, 5 or 6 king-move adjacent elements, with upper left element zero.
1
1, 5, 13, 93, 832, 5101, 49516, 597306, 7738947, 148981944, 3876180802
OFFSET
1,2
COMMENTS
Diagonal of A304669.
EXAMPLE
Some solutions for n=5
..0..1..1..0..1. .0..1..0..0..0. .0..0..0..0..0. .0..0..1..0..0
..1..1..1..1..1. .0..0..0..0..0. .0..0..0..0..0. .0..0..0..0..0
..1..1..1..1..1. .0..0..0..0..0. .0..0..0..0..1. .0..0..0..0..0
..0..1..1..1..1. .0..0..1..0..0. .1..0..0..0..0. .0..0..0..0..0
..1..1..1..0..1. .0..1..1..0..1. .0..0..0..0..0. .0..1..0..0..1
CROSSREFS
Cf. A304669.
Sequence in context: A092567 A055623 A280294 * A306167 A107171 A309532
KEYWORD
nonn
AUTHOR
R. H. Hardin, May 16 2018
STATUS
approved