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A316421
Number of n X n 0..1 arrays with every element unequal to 0, 1, 3, 5, 6 or 8 king-move adjacent elements, with upper left element zero.
0
1, 5, 14, 97, 1097, 8916, 130402, 3242010, 86620644, 3376983746, 210700614386
OFFSET
1,2
COMMENTS
Diagonal of A316427.
EXAMPLE
Some solutions for n=5
..0..0..0..0..0. .0..1..1..1..1. .0..1..0..1..1. .0..0..0..0..0
..0..1..0..0..1. .1..1..1..1..1. .1..1..0..0..1. .1..0..0..0..0
..0..0..0..0..0. .1..1..1..1..0. .0..0..0..0..0. .0..0..0..0..0
..0..0..0..0..0. .0..1..1..1..1. .1..0..0..0..0. .1..1..0..0..0
..1..0..0..0..0. .0..0..1..1..1. .0..0..0..1..0. .1..0..0..0..0
CROSSREFS
Cf. A316427.
Sequence in context: A334547 A348777 A024167 * A317424 A077262 A184439
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jul 02 2018
STATUS
approved