A275259 - OEIS

A275259

Number of n X n 0..2 arrays with no element equal to any value at offset (-2,-1), (-2,1) or (-1,-1) and new values introduced in order 0..2.

1, 9, 128, 2564, 126420, 14005180, 3224773976, 1565667773372, 1622686746762908, 3362812964412060544

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OFFSET

1,2

COMMENTS

Diagonal of A275266.

LINKS

EXAMPLE

Some solutions for n=4

..0..1..0..1. .0..1..0..0. .0..1..0..2. .0..1..0..2. .0..1..2..1

..0..1..0..1. .0..1..2..2. .0..2..0..1. .0..1..2..1. .2..1..2..0

..2..1..0..1. .2..1..2..1. .0..2..0..1. .0..1..0..1. .2..1..0..0

..0..1..0..1. .2..1..0..1. .0..1..0..1. .2..1..2..1. .2..1..2..1

CROSSREFS

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jul 21 2016

STATUS

approved