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A206126 Number of (n+1)X7 0..2 arrays with every 2X2 subblock having nonzero determinant and having the same number of clockwise edge increases as its horizontal and vertical neighbors 1
21940, 491162, 13475116, 404927788, 12251680342, 372768662926, 11329725297298, 344897509718070, 10488584427995232, 319255468024182244, 9710751056424521182, 295543173753212342684, 8990520516421539201648 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 6 of A206128
LINKS
EXAMPLE
Some solutions for n=4
..2..1..0..2..1..2..2....0..1..0..1..2..0..2....2..2..1..2..0..1..2
..1..1..1..1..1..1..2....1..0..2..0..1..1..0....1..0..2..1..1..0..1
..2..1..0..1..2..1..1....0..2..1..1..0..2..1....0..2..1..0..2..1..0
..0..1..1..1..1..1..2....2..1..0..2..1..0..2....1..0..2..1..0..2..1
..1..1..2..1..0..1..1....1..0..1..0..2..1..0....2..1..0..2..1..0..2
CROSSREFS
Sequence in context: A345156 A031647 A045109 * A077751 A066693 A262821
KEYWORD
nonn
AUTHOR
R. H. Hardin Feb 04 2012
STATUS
approved

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Last modified February 23 14:24 EST 2024. Contains 370283 sequences. (Running on oeis4.)