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A203040
Number of (n+3)X(n+3) binary arrays with no more than one of any consecutive four bits set in any row or column
0
209, 2509, 53754, 1941572, 111839021, 10711347544, 1720766183538, 462798586473972, 206584733623719215
OFFSET
1,1
COMMENTS
Diagonal of A203048
EXAMPLE
Some solutions for n=3
..0..0..1..0..0..0....0..0..1..0..0..0....1..0..0..0..0..1....1..0..0..0..1..0
..0..0..0..0..0..0....0..0..0..0..0..0....0..0..0..0..0..0....0..0..0..1..0..0
..0..0..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..1..0....1..0..0..0..0..0....0..0..0..0..0..0....0..0..0..0..0..0
..1..0..0..0..0..0....0..0..0..0..0..1....0..0..1..0..0..0....0..0..0..0..1..0
..0..0..1..0..0..0....0..0..0..0..0..0....1..0..0..0..0..0....1..0..0..0..0..1
CROSSREFS
Sequence in context: A316684 A235731 A235512 * A250951 A304765 A316509
KEYWORD
nonn
AUTHOR
R. H. Hardin Dec 27 2011
STATUS
approved