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A186901
Number of (n+1)X9 binary arrays with every 2X2 subblock determinant equal to exactly one or two horizontal and vertical neighbor 2X2 subblock determinants
1
14860, 19040, 122820, 608194, 2203303, 12599670, 85310077, 523902288, 2795274149, 16608468926, 108609778968, 679604170463, 3947135094182, 24085962638564, 153869560878987, 960883396722563, 5783252949932518
OFFSET
1,1
COMMENTS
Column 8 of A186902
LINKS
EXAMPLE
Some solutions for 3X9
..1..1..0..0..1..1..1..1..0....0..0..0..1..1..1..0..0..1
..0..1..1..1..1..0..0..1..1....0..0..1..1..0..1..1..0..0
..0..0..0..0..1..1..0..0..0....0..0..1..0..0..0..1..1..1
CROSSREFS
Sequence in context: A177412 A209947 A023045 * A185486 A031815 A365257
KEYWORD
nonn
AUTHOR
R. H. Hardin Feb 28 2011
STATUS
approved