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A254497
Number of (7+2)X(n+2) 0..1 arrays with every 3X3 subblock diagonal maximum plus antidiagonal minimum nondecreasing horizontally, vertically and ne-to-sw antidiagonally
1
20872192, 1607095232, 109168144000, 8174961189248, 565727609862912, 39860323285338752, 2791393651770044928, 195878395284494809216, 13694364784954747518720, 959682172861348320136576
OFFSET
1,1
COMMENTS
Row 7 of A254491
LINKS
EXAMPLE
Some solutions for n=1
..0..0..0....0..0..0....0..0..0....0..0..0....0..0..0....0..0..0....0..0..0
..0..0..0....0..0..0....0..0..0....0..0..0....0..0..0....0..0..0....0..0..0
..1..0..0....1..0..1....1..0..0....1..0..0....0..0..0....0..0..0....1..0..0
..1..0..0....1..0..1....1..0..0....1..0..1....1..0..0....0..0..0....1..0..0
..0..0..0....1..0..1....0..1..1....1..0..0....0..0..0....0..1..0....1..1..0
..0..1..0....1..0..0....0..0..0....1..1..1....1..0..0....0..0..0....0..0..1
..1..1..1....1..0..1....0..1..1....1..1..1....1..1..1....1..1..1....1..1..0
..0..1..0....0..0..1....1..1..1....0..1..0....1..1..0....0..0..0....0..1..1
..1..0..0....0..0..0....0..1..0....1..0..0....0..1..1....1..1..0....0..1..1
CROSSREFS
Sequence in context: A294031 A321670 A356071 * A254490 A253862 A172729
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 31 2015
STATUS
approved