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A187313
Half the number of (n+2)X7 binary arrays with each 3X3 subblock having sum 3, 4, 5 or 6
1
502545, 38586679, 2885253967, 219684364642, 16720419105846, 1272968321737346, 96936541525346279, 7381886136632779297, 562143290050791907402, 42808456214913586706030, 3259959385289599256192062
OFFSET
1,1
COMMENTS
Column 5 of A187317
LINKS
EXAMPLE
Some solutions for 4X7 with a(1,1)=0
..0..0..1..0..1..1..0....0..0..1..0..0..0..1....0..0..1..1..0..0..1
..0..0..1..0..0..1..0....0..0..1..0..0..1..1....0..0..1..0..1..0..1
..0..0..1..1..1..1..1....0..0..1..1..1..1..1....0..0..1..1..0..1..0
..0..0..1..1..0..0..0....0..0..1..0..0..0..1....0..0..1..0..0..1..0
CROSSREFS
Sequence in context: A145539 A157759 A227110 * A183789 A203548 A195525
KEYWORD
nonn
AUTHOR
R. H. Hardin Mar 08 2011
STATUS
approved