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A258523
Number of (n+2)X(n+2) 0..1 arrays with every 3X3 subblock sum of the two maximums of the central row and central column plus the two minimums of the diagonal and antidiagonal nondecreasing horizontally, vertically and ne-to-sw antidiagonally
1
512, 16473, 523716, 6505920, 65947572, 592438330, 6279181504, 90536765981, 940469384118, 13154653966188, 268158250039108, 2752663543823279, 39677268013710316, 3474369295264994411, 23501492053909210974
OFFSET
1,1
COMMENTS
Diagonal of A258530
LINKS
EXAMPLE
Some solutions for n=2
..0..1..0..1....0..0..1..0....1..0..0..0....1..0..1..0....0..0..1..0
..1..1..1..1....1..0..0..0....0..1..1..1....0..1..0..1....0..0..1..1
..1..0..1..0....1..0..0..1....1..1..0..1....0..1..0..0....1..0..1..0
..1..0..1..0....0..1..1..1....0..0..1..1....1..1..1..0....1..1..0..1
CROSSREFS
Sequence in context: A200791 A254812 A329894 * A257147 A254579 A195657
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jun 02 2015
STATUS
approved