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A256947
Number of (n+2)X(n+2) 0..1 arrays with every 3X3 subblock sum of the two sums of the central row and central column minus the two minimums of the diagonal and antidiagonal nondecreasing horizontally and vertically
1
512, 13349, 319819, 2782301, 11818550, 27007866, 56306098, 109071370, 212009150, 385935286, 699340102, 1275550414, 2347054062, 4286793366, 7769996982, 14567381806, 27588495230, 52263269822, 98037946714, 189435993774
OFFSET
1,1
COMMENTS
Diagonal of A256954
LINKS
EXAMPLE
Some solutions for n=2
..0..1..1..1....1..0..1..0....0..0..0..0....0..0..1..1....0..0..1..0
..0..1..1..0....1..1..0..0....1..1..0..1....0..0..1..1....0..0..0..0
..1..1..1..0....1..0..1..0....1..0..1..0....0..1..1..1....0..1..1..1
..1..0..0..0....1..0..1..0....1..0..1..0....1..0..0..0....1..0..1..1
CROSSREFS
Sequence in context: A254768 A254504 A253812 * A254720 A254252 A200791
KEYWORD
nonn
AUTHOR
R. H. Hardin, Apr 13 2015
STATUS
approved