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A231066
Number of black square subarrays of (n+1)X(n+1) binary arrays with no element equal to a strict majority of its diagonal and antidiagonal neighbors, with upper left element zero
1
1, 3, 11, 89, 685, 13785, 223270, 10204445, 367167586, 37025661591, 2960154980175, 660415936461789, 116764729695106769, 57661136320504955250, 22542682942448533813110, 24616708332260554368059831
OFFSET
1,2
COMMENTS
Diagonal of A231070
LINKS
EXAMPLE
Some solutions for n=4
..x..0..x..0..x....x..0..x..0..x....x..0..x..0..x....x..0..x..0..x
..1..x..1..x..0....1..x..1..x..1....1..x..1..x..0....1..x..1..x..0
..x..0..x..1..x....x..0..x..0..x....x..0..x..1..x....x..0..x..1..x
..0..x..0..x..1....0..x..1..x..1....1..x..0..x..0....1..x..1..x..0
..x..1..x..0..x....x..1..x..0..x....x..0..x..1..x....x..0..x..1..x
CROSSREFS
Sequence in context: A157980 A092148 A297485 * A091547 A063854 A066384
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 03 2013
STATUS
approved