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A186602 Number of (n+4) X 6 binary arrays with every 5 X 5 subblock commuting with each horizontal and vertical neighbor 5 X 5 subblock. 1
6187, 543, 916, 3455, 10882, 23977, 38625, 49309, 52849, 53957, 54873, 55797, 56857, 59338, 67619, 89028, 127253, 177594, 232896, 295106, 371360, 465354, 572524, 687136, 816937, 982191, 1203410, 1488146, 1835626, 2260505, 2797091, 3483636 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 2 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>20.
EXAMPLE
Some solutions for 8 X 6
..0..0..0..1..0..1....0..0..1..1..0..1....0..0..0..1..1..0....1..1..1..1..1..1
..0..0..0..0..0..1....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..0....0..0..0..0..0..0
..0..0..0..0..0..0....0..0..0..0..0..0....0..0..0..0..0..0....0..0..0..0..0..0
..0..0..0..0..0..0....0..0..0..0..0..0....0..0..0..0..0..0....0..0..0..0..0..0
..0..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....1..0..1..0..0..0....0..0..0..0..0..0....0..0..0..0..0..0
..1..1..0..0..0..0....1..0..1..0..0..0....1..0..1..0..0..0....0..0..0..0..0..1
CROSSREFS
Cf. A186609.
Sequence in context: A068757 A278868 A255791 * A031836 A094494 A235277
KEYWORD
nonn
AUTHOR
R. H. Hardin, Feb 24 2011
STATUS
approved

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Last modified March 29 09:44 EDT 2024. Contains 371268 sequences. (Running on oeis4.)