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A186604
Number of (n+4)X8 binary arrays with every 5X5 subblock commuting with each horizontal and vertical neighbor 5X5 subblock
1
42120, 3455, 5813, 19248, 54040, 90664, 98376, 99820, 101072, 102332, 103620, 105172, 108332, 117492, 152956, 244561, 344142, 446775, 556660, 694109, 888987, 1093393, 1304011, 1531041, 1821099, 2260191, 2808392, 3465438, 4248781, 5232601
OFFSET
1,1
COMMENTS
Column 4 of A186609
LINKS
FORMULA
Empirical: a(n)=a(n-1)+a(n-3)-a(n-4)+a(n-5)-a(n-6)-a(n-8)+a(n-9)+a(n-10)-a(n-13) for n>18
EXAMPLE
Some solutions for 6X8
..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..0..0..0..0..0....0..0..0..0..0..0..0..1....0..0..0..0..0..0..1..1
..0..0..0..0..0..0..1..1....1..0..0..0..0..0..1..1....1..0..0..0..0..0..1..1
..1..1..0..0..0..0..0..0....1..0..0..0..0..0..0..0....1..0..0..0..0..0..0..0
..1..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..0..0..0....1..0..0..0..0..0..0..0....0..0..0..0..0..0..0..0
CROSSREFS
Sequence in context: A031849 A151818 A374368 * A345154 A103155 A271749
KEYWORD
nonn
AUTHOR
R. H. Hardin Feb 24 2011
STATUS
approved