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A259242
Number of (n+1)X(n+1) 0..1 arrays with each 2X2 subblock having clockwise pattern 0000 0011 or 0111
1
9, 65, 720, 14425, 451481, 25462352, 2259371001, 359730429763, 90571705672192, 40745743533702439, 29115984372311031043, 37023356202692415717856, 75090733417483065667600023, 269938147719275944289836747059
OFFSET
1,1
COMMENTS
Diagonal of A259250
LINKS
EXAMPLE
Some solutions for n=4
..1..1..1..1..0....0..0..1..0..0....1..1..0..0..1....0..1..0..0..1
..0..0..0..1..0....1..1..1..1..1....0..1..1..1..1....1..1..1..1..1
..0..0..0..1..1....1..0..1..0..0....0..1..0..1..0....1..0..1..0..1
..1..1..1..1..0....1..1..1..1..1....0..1..0..1..0....1..1..1..1..1
..0..1..0..1..1....1..0..0..0..1....1..1..1..1..0....1..0..0..1..0
CROSSREFS
Sequence in context: A103459 A339688 A100311 * A120286 A152581 A122733
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jun 22 2015
STATUS
approved