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A184539
Number of (n+2)X(n+2) binary arrays with each 3X3 subblock having rows and columns in lexicographically nondecreasing order
1
45, 193, 631, 1837, 5313, 16345, 54543, 194245, 719905, 2725367, 10430675, 40158073, 155173369, 601154073, 2333701711, 9075257125, 35345417073, 137846719279, 538258108483, 2104099248441, 8233431070825, 32247604093423
OFFSET
1,1
COMMENTS
Diagonal of A184548
LINKS
EXAMPLE
Some solutions for 4X4
..0..0..1..1....0..0..0..0....0..0..0..0....0..0..0..0....0..0..0..1
..0..0..1..1....0..0..0..1....0..0..0..0....0..0..0..1....0..1..1..1
..1..1..0..1....0..0..1..1....0..0..1..1....0..0..0..1....0..1..1..1
..1..1..0..1....0..0..1..1....1..1..0..0....0..0..0..1....0..1..1..1
CROSSREFS
Sequence in context: A158630 A158634 A091197 * A146302 A203835 A087442
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 16 2011
STATUS
approved