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A253812
Number of (n+2)X(n+2) 0..1 arrays with every 3X3 subblock diagonal sum minus antidiagonal median nondecreasing horizontally and vertically
0
512, 12992, 214596, 1713952, 20991976, 250052478, 1124641848, 5696013500, 59724420234, 668675350006, 2474515112828
OFFSET
1,1
COMMENTS
Diagonal of A253820
EXAMPLE
Some solutions for n=2
..0..0..1..1....1..0..1..0....1..0..0..1....0..1..1..1....0..1..1..0
..1..1..1..0....0..0..0..0....1..0..1..0....0..1..1..1....0..1..0..0
..1..0..0..1....0..1..0..1....1..1..0..1....1..1..1..0....0..0..1..0
..0..1..1..1....0..0..0..1....1..0..0..1....0..0..1..0....1..0..1..1
CROSSREFS
Sequence in context: A254475 A254768 A254504 * A256947 A254720 A254252
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 14 2015
STATUS
approved