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A186059 Number of (n+2)X7 binary arrays with each 3X3 subblock having a positive determinant 1
6915, 77987, 743667, 5877960, 58408337, 545528022, 4584860256, 44097747372, 410464949409, 3514156302617, 33311968188317, 310167965845840, 2682484283383291, 25173951022372310, 234600361563324997 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 5 of A186063

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..200

EXAMPLE

Some solutions for 4X7

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

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

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

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

CROSSREFS

Sequence in context: A192077 A272913 A230468 * A253612 A004243 A004244

Adjacent sequences:  A186056 A186057 A186058 * A186060 A186061 A186062

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 11 2011

STATUS

approved

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Last modified December 4 04:49 EST 2021. Contains 349469 sequences. (Running on oeis4.)