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A185478
Number of (n+1)X(n+1) binary arrays with every 2X2 subblock determinant equal to some horizontal or vertical neighbor 2X2 subblock determinant
0
0, 148, 4740, 431655, 92026207, 51354095605, 70588969710949, 246617622494198862, 2154931835018459820138, 47474118606355438067066326
OFFSET
1,2
COMMENTS
Diagonal of A185487
EXAMPLE
Some solutions for 3X3
..1..1..0....1..0..0....1..0..1....0..0..0....0..0..1....1..0..0....0..1..0
..0..0..0....1..0..0....1..0..0....0..0..0....0..0..0....1..1..0....1..1..0
..1..1..1....1..0..1....0..0..1....1..1..0....0..0..1....0..1..0....1..0..0
CROSSREFS
Sequence in context: A224055 A224308 A224372 * A210159 A252770 A035822
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 28 2011
STATUS
approved