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A183347
Number of nX5 binary arrays with each 1 adjacent to exactly one 0 vertically and one 0 horizontally
1
1, 33, 64, 163, 594, 1738, 5121, 15789, 47687, 143778, 435813, 1318596, 3987854, 12067667, 36512229, 110465085, 334226102, 1011229145, 3059528958, 9256844146, 28007279625, 84738001807, 256381027843, 775699615772, 2346935586759
OFFSET
1,2
COMMENTS
Column 5 of A183352
LINKS
FORMULA
Empirical: a(n)=a(n-1)+a(n-2)+11*a(n-3)+12*a(n-4)+9*a(n-5)-6*a(n-6)-19*a(n-7)-a(n-8)+10*a(n-9)+4*a(n-10)-2*a(n-12)
EXAMPLE
Some solutions for 7X5
..1..0..0..0..0....0..0..0..0..0....0..1..1..0..0....0..1..1..0..0
..0..0..0..0..1....0..1..1..0..1....0..0..0..0..0....1..0..0..0..0
..0..1..1..0..1....0..1..1..0..1....0..0..0..0..1....1..0..0..0..1
..0..1..1..0..0....1..0..0..0..0....0..0..0..0..1....0..0..0..0..1
..1..0..0..0..0....1..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..0..0..0....0..0..0..0..0
..0..1..1..0..0....0..0..1..1..0....0..0..1..1..0....0..0..0..0..0
CROSSREFS
Sequence in context: A100593 A115160 A053179 * A116350 A331071 A062059
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 04 2011
STATUS
approved