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A188391
Number of (7*n) X 7 binary arrays with rows in nonincreasing order and n ones in every column.
1
877, 624889, 238773109, 55643064708, 8738543204786, 992649275638900, 85864898797026630, 5878897478976883089, 328290088245117576091, 15312799057782368782624, 608266461487720680703265, 20908600183730320082374280
OFFSET
1,1
EXAMPLE
Some solutions for 14 X 7:
..1..0..0..0..0..0..0....1..0..0..0..1..0..1....1..0..0..1..0..0..1
..1..0..0..0..0..0..0....1..0..0..0..1..0..0....1..0..0..0..0..0..0
..0..1..1..0..0..0..0....0..1..0..1..0..0..0....0..1..0..0..0..0..0
..0..1..0..0..0..0..1....0..1..0..0..0..0..0....0..1..0..0..0..0..0
..0..0..1..0..0..0..1....0..0..1..1..0..1..0....0..0..1..1..0..0..1
..0..0..0..1..1..1..0....0..0..1..0..0..0..0....0..0..1..0..0..0..0
..0..0..0..1..0..0..0....0..0..0..0..0..1..0....0..0..0..0..1..1..0
..0..0..0..0..1..1..0....0..0..0..0..0..0..1....0..0..0..0..1..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..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..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..0
CROSSREFS
Column 7 of A188392.
Sequence in context: A255947 A048791 A273657 * A209464 A209526 A208307
KEYWORD
nonn
AUTHOR
R. H. Hardin, Mar 30 2011
EXTENSIONS
a(7)-a(12) from Andrew Howroyd, May 17 2020
STATUS
approved