A300090 - OEIS

A300090

Number of n X n 0..1 arrays with every element equal to 0, 2, 3, 5, 6, 7 or 8 king-move adjacent elements, with upper left element zero.

1, 5, 7, 56, 1301, 43848, 3273425, 616964357, 279529477217

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OFFSET

1,2

COMMENTS

Diagonal of A300096.

LINKS

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

KEYWORD

nonn

AUTHOR

R. H. Hardin, Feb 24 2018

STATUS

approved