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A250575
Number of (n+1) X (n+1) 0..1 arrays with nondecreasing max(x(i,j),x(i,j-1)) in the i direction and nondecreasing min(x(i,j),x(i-1,j)) in the j direction
1
10, 60, 336, 1776, 8914, 43202, 203560, 939730, 4266332, 19120668, 84774066, 372587962, 1625370614, 7046239064, 30380655534, 130376624746, 557189663232, 2372600434880, 10070044493366, 42616195500252, 179877106083440
OFFSET
1,1
COMMENTS
Diagonal of A250583
LINKS
EXAMPLE
Some solutions for n=6
..0..0..0..0..0..0..1....0..0..0..0..0..0..0....0..0..0..0..1..1..1
..0..0..0..0..0..0..1....0..0..0..0..0..0..0....0..0..0..0..1..1..1
..0..0..0..0..0..1..1....0..0..0..0..0..1..1....0..0..0..0..1..1..1
..0..0..0..0..1..1..1....0..1..1..1..1..1..1....0..0..0..0..1..1..1
..0..1..1..1..1..1..1....0..1..1..1..1..1..1....0..0..0..0..1..1..1
..0..1..1..1..1..1..1....1..1..1..1..1..1..1....0..0..0..0..1..1..1
..1..1..1..1..1..1..1....0..1..1..1..1..1..1....1..1..0..0..1..1..1
CROSSREFS
Sequence in context: A293081 A292489 A083585 * A155633 A368525 A002493
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 25 2014
STATUS
approved