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A257203
Number of (n+2)X(2+2) 0..1 arrays with every 3X3 subblock sum of the two sums of the diagonal and antidiagonal minus the two minimums of the central column and central row nondecreasing horizontally and vertically
1
2423, 7800, 20815, 67606, 191070, 443711, 992467, 2153497, 4441745, 8865989, 17513940, 33716004, 63122416, 116916487, 215061906, 390592396, 702133715, 1252287829, 2218180477, 3907760319, 6851939815, 11959426756, 20788960871
OFFSET
1,1
COMMENTS
Column 2 of A257209
LINKS
EXAMPLE
Some solutions for n=4
..1..0..0..1....0..1..0..0....0..1..0..0....1..1..0..1....0..0..0..0
..0..0..0..0....0..1..0..0....0..0..0..1....0..1..0..0....0..1..0..0
..1..0..0..1....0..1..0..0....0..0..0..1....0..1..0..0....0..1..0..1
..1..1..1..1....1..1..0..0....1..1..0..0....1..1..1..1....1..1..0..1
..0..0..0..0....0..0..0..1....0..0..0..1....1..0..1..1....0..0..0..1
..0..1..1..0....0..1..1..1....1..0..0..1....1..1..1..1....1..0..1..1
CROSSREFS
Sequence in context: A131759 A254901 A254908 * A156120 A078868 A340433
KEYWORD
nonn
AUTHOR
R. H. Hardin, Apr 18 2015
STATUS
approved