A186573 - OEIS

A186573

Number of (n+2)X(n+2) 0..7 arrays with every 3X3 subblock commuting with each horizontal and vertical neighbor 3X3 subblock

134217728, 3383, 335092, 17616908, 59508492, 69691980, 93739724, 178672908, 557336396, 3528280204

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OFFSET

1,1

COMMENTS

Diagonal of A186574

LINKS

EXAMPLE

Some solutions for 4X4

..0..0..7..2....0..0..0..0....0..0..4..3....0..0..0..0....0..1..0..0

..0..0..0..2....0..0..0..0....0..0..0..6....2..0..0..0....0..0..1..0

..0..0..0..0....0..0..0..0....0..0..0..0....6..2..0..0....5..0..0..1

..0..0..0..0....3..2..0..0....0..0..0..0....6..6..2..0....0..5..0..0

CROSSREFS

KEYWORD

nonn

AUTHOR

STATUS

approved