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A254504
Number of (n+2)X(n+2) 0..1 arrays with every 3X3 subblock sum of four medians of central row, central column, diagonal and antidiagonal nondecreasing horizontally, vertically and ne-to-sw antidiagonally
0
512, 12324, 373348, 14550580, 801430034, 70328373238, 8348810077730, 1556719261083451, 442940186438236832, 188746754389519521309
OFFSET
1,1
COMMENTS
Diagonal of A254512
EXAMPLE
Some solutions for n=2
..0..0..0..0....1..0..0..0....1..1..0..1....1..0..0..1....1..0..0..1
..0..0..0..0....0..0..1..0....0..0..1..1....1..1..1..1....0..1..1..1
..1..0..0..1....0..1..1..0....0..1..1..1....0..1..1..1....0..1..0..1
..0..0..1..1....1..0..0..1....0..1..1..1....0..1..0..1....0..0..1..1
CROSSREFS
Sequence in context: A200844 A254475 A254768 * A253812 A256947 A254720
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 31 2015
STATUS
approved