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A188103
Number of (n+3)X10 binary arrays with every 4X4 subblock commuting with each horizontal and vertical neighbor 4X4 subblock
1
17850, 2866, 4041, 5953, 8873, 10653, 11457, 12477, 14633, 17361, 20685, 25233, 34381, 45145, 57105, 71309, 94870, 122775, 155200, 194417, 252139, 324969, 414279, 524585, 676957, 872342, 1116632, 1421135, 1825426, 2345560, 3003909, 3832777
OFFSET
1,1
COMMENTS
Column 7 of A188105
LINKS
FORMULA
Empirical: a(n)=2*a(n-1)-a(n-2)+a(n-4)-2*a(n-5)+a(n-6)+a(n-8)-a(n-9) for n>17
EXAMPLE
Some solutions for 5X10
..0..0..0..0..0..0..0..0..1..0....0..0..0..0..0..0..1..1..1..1
..0..0..0..0..0..0..0..0..1..0....0..0..0..0..0..0..0..1..1..1
..0..0..0..0..0..0..0..0..0..0....1..0..0..0..0..0..0..0..1..1
..1..0..0..0..0..0..0..0..0..0....1..0..0..0..0..0..0..0..0..1
..1..1..0..0..0..0..0..0..0..0....0..1..0..0..0..0..0..0..0..0
CROSSREFS
Sequence in context: A235782 A235787 A235563 * A250078 A165106 A205661
KEYWORD
nonn
AUTHOR
R. H. Hardin Mar 20 2011
STATUS
approved