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A186605 Number of (n+4)X9 binary arrays with every 5X5 subblock commuting with each horizontal and vertical neighbor 5X5 subblock 1
156276, 10882, 19840, 54040, 101080, 126344, 132040, 133484, 134936, 136416, 138160, 141124, 149504, 175064, 237212, 343672, 478073, 619334, 779227, 977188, 1221205, 1496127, 1786289, 2120643, 2555213, 3142299, 3894691, 4803584, 5916562 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 5 of A186609

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..90

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>19

EXAMPLE

Some solutions for 6X9

..0..0..0..0..0..0..0..0..1....0..0..0..0..0..0..0..1..1

..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..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..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

CROSSREFS

Sequence in context: A171658 A177811 A129242 * A297060 A114658 A274364

Adjacent sequences:  A186602 A186603 A186604 * A186606 A186607 A186608

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 24 2011

STATUS

approved

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Last modified October 16 09:29 EDT 2019. Contains 328056 sequences. (Running on oeis4.)