A299046 - OEIS

A299046

Number of n X n 0..1 arrays with every element equal to 0, 1, 3, 4, 5 or 6 king-move adjacent elements, with upper left element zero.

1, 4, 11, 455, 9994, 1731008, 888675946, 1063108306477, 4680605638885458

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OFFSET

1,2

COMMENTS

Diagonal of A299052.

LINKS

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

KEYWORD

nonn

AUTHOR

R. H. Hardin, Feb 01 2018

STATUS

approved