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A190024 Number of (n+2)X(n+2) binary arrays with every 3X3 subblock commuting with each horizontal and vertical neighbor 3X3 subblock 1
512, 45, 158, 458, 834, 1230, 1910, 3018, 5102, 9706, 18522, 34606, 65258, 119934, 217210, 400266, 736570, 1351694, 2506658, 4638314, 8542346, 15797722, 29180334, 53760774, 99319938, 183479122, 338452838, 625204870, 1154917550, 2131346658 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Diagonal of A190033

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..59

EXAMPLE

Some solutions for 4X4

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

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

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

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

CROSSREFS

Sequence in context: A035596 A095843 A095882 * A190033 A190025 A077743

Adjacent sequences:  A190021 A190022 A190023 * A190025 A190026 A190027

KEYWORD

nonn

AUTHOR

R. H. Hardin May 04 2011

STATUS

approved

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Last modified May 22 15:13 EDT 2019. Contains 323480 sequences. (Running on oeis4.)