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A202555
Number of nX3 0,1 arrays with the row and column sums nondecreasing
1
4, 17, 66, 235, 824, 2848, 9520, 31648, 104536, 339553, 1099666, 3549038, 11338836, 36160324, 115069316, 363700188, 1148126044, 3619072821, 11352513438, 35579368776, 111388887136, 347450537496, 1083054672896, 3373317547471
OFFSET
1,1
COMMENTS
Column 3 of A202560
LINKS
EXAMPLE
Some solutions for n=8
..0..1..0....0..1..0....1..0..0....0..0..0....0..0..0....0..1..1....1..0..0
..0..0..1....0..1..0....0..0..1....0..0..1....0..0..1....1..0..1....1..1..0
..0..0..1....0..0..1....0..0..1....0..0..1....0..0..1....1..1..0....1..0..1
..0..1..0....0..0..1....0..0..1....1..0..0....0..1..0....1..0..1....1..1..0
..0..1..0....1..0..1....0..1..1....0..1..0....0..1..0....0..1..1....0..1..1
..0..0..1....1..0..1....1..1..0....0..1..1....1..0..0....0..1..1....0..1..1
..1..0..0....0..1..1....1..0..1....0..1..1....0..0..1....0..1..1....1..0..1
..0..1..1....1..1..0....0..1..1....1..1..1....0..1..1....1..0..1....0..1..1
CROSSREFS
Sequence in context: A181410 A102207 A334827 * A045992 A217539 A046723
KEYWORD
nonn
AUTHOR
R. H. Hardin Dec 21 2011
STATUS
approved