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A186613 Number of (n+5) X 8 binary arrays with every 6 X 6 subblock commuting with each horizontal and vertical neighbor 6 X 6 subblock. 1
140552, 5072, 6758, 30997, 172192, 614995, 1360475, 1965243, 2222975, 2268227, 2275143, 2281163, 2287191, 2293247, 2300019, 2311383, 2361616, 2636173, 3542458, 5299299, 7528860, 9808265, 12133455, 14688989, 17882279, 21932181, 26461575 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 3 of A186619.

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..87

FORMULA

Empirical: a(n) = a(n-1)+a(n-4)-a(n-5)+a(n-6)-a(n-7)-a(n-10)+a(n-11)+a(n-12)-a(n-16) for n > 24.

EXAMPLE

Some solutions for 7 X 8

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

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

CROSSREFS

Cf. A186619.

Sequence in context: A242143 A156409 A281583 * A036527 A250570 A252017

Adjacent sequences: A186610 A186611 A186612 * A186614 A186615 A186616

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 24 2011

STATUS

approved

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Last modified February 8 23:03 EST 2023. Contains 360153 sequences. (Running on oeis4.)