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A188421
Number of (6*n)Xn binary arrays with rows in nonincreasing order, 6 ones in every column and no more than 3 ones in any row
0
1, 7, 256, 36659, 15083334, 14100262412, 25784105550034
OFFSET
1,2
COMMENTS
Row 6 of A188416
EXAMPLE
All solutions for 12X2
..1..1....1..1....1..1....1..1....1..0....1..1....1..1
..1..1....1..1....1..1....1..0....1..0....1..1....1..1
..1..1....1..1....1..0....1..0....1..0....1..1....1..1
..1..1....1..1....1..0....1..0....1..0....1..1....1..0
..1..1....1..1....1..0....1..0....1..0....1..0....1..0
..1..1....1..0....1..0....1..0....1..0....1..0....1..0
..0..0....0..1....0..1....0..1....0..1....0..1....0..1
..0..0....0..0....0..1....0..1....0..1....0..1....0..1
..0..0....0..0....0..1....0..1....0..1....0..0....0..1
..0..0....0..0....0..1....0..1....0..1....0..0....0..0
..0..0....0..0....0..0....0..1....0..1....0..0....0..0
..0..0....0..0....0..0....0..0....0..1....0..0....0..0
CROSSREFS
Sequence in context: A366866 A228291 A119942 * A165437 A232304 A254127
KEYWORD
nonn
AUTHOR
R. H. Hardin Mar 30 2011
STATUS
approved