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A186050
Number of (n+2)X9 binary arrays with each 3X3 subblock singular
1
15426974, 2466606274, 384595851458, 47475070890310, 6706785849517148, 936496872238986044, 127786000491037137748, 17715530704266966622328, 2450423833775651684970790, 338228103996552089150434500
OFFSET
1,1
COMMENTS
Column 7 of A186052
LINKS
EXAMPLE
Some solutions for 4X9
..0..0..0..0..0..0..0..0..0....0..0..0..0..0..1..1..1..0
..0..0..0..0..0..0..1..0..0....0..0..0..0..1..0..0..0..0
..0..0..0..0..0..0..0..0..1....0..0..0..0..0..0..0..1..1
..0..0..0..0..0..1..1..0..0....0..0..0..0..1..1..0..1..0
CROSSREFS
Sequence in context: A128480 A273355 A207797 * A121840 A345618 A346335
KEYWORD
nonn
AUTHOR
R. H. Hardin Feb 11 2011
STATUS
approved