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A202722
Number of (n+3)X7 binary arrays with no more than three of any consecutive four bits set in any row or column
1
99003393, 8918220179, 798649122250, 71167367871410, 6316493287643944, 562277092226375915, 50035880671367204219, 4451869056496085206106, 396085241270480336084770, 35242151010434808732906386
OFFSET
1,1
COMMENTS
Column 4 of A202726
LINKS
EXAMPLE
Some solutions for n=2
..1..1..1..0..0..1..1....0..1..0..0..0..0..1....1..0..1..0..1..1..1
..0..0..1..0..1..0..1....0..0..0..1..0..1..0....1..1..0..0..0..1..0
..0..1..0..1..0..1..1....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..0..0..0....1..0..0..0..0..1..1
..1..1..0..0..0..0..0....0..1..1..1..0..0..1....1..1..1..0..1..1..1
CROSSREFS
Sequence in context: A322693 A251357 A168640 * A330129 A182750 A033424
KEYWORD
nonn
AUTHOR
R. H. Hardin Dec 23 2011
STATUS
approved