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A237734 Number of (n+2)X(1+2) 0..1 arrays with the (lower) median of each row and column nondecreasing 1
144, 790, 3720, 18284, 83776, 389862, 1747320, 7872964, 34692768, 153039484, 665606032, 2892713880, 12452328704, 53523477382, 228514634712, 973914704084, 4130296829920, 17485093214484, 73743666735728, 310486705313128 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 1 of A237738

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..69

EXAMPLE

Some solutions for n=5

..0..1..0....0..1..0....0..0..1....1..0..1....0..0..0....1..0..0....0..1..0

..1..0..0....1..0..0....0..0..0....1..1..0....0..0..0....0..0..1....0..0..0

..1..0..0....1..0..0....0..1..0....1..1..0....1..0..0....0..0..0....0..0..0

..1..0..0....1..0..0....0..0..1....1..1..0....0..0..1....0..0..1....0..1..1

..0..0..0....0..0..1....1..1..0....1..1..1....0..0..1....1..0..0....1..0..1

..0..0..0....0..1..1....1..1..1....1..1..1....1..0..1....0..1..0....0..1..1

..0..1..1....0..1..1....1..1..1....0..1..1....1..1..1....1..0..1....0..1..1

CROSSREFS

Sequence in context: A112067 A210724 A237738 * A234091 A234084 A223235

Adjacent sequences:  A237731 A237732 A237733 * A237735 A237736 A237737

KEYWORD

nonn

AUTHOR

R. H. Hardin, Feb 12 2014

STATUS

approved

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Last modified September 29 03:50 EDT 2022. Contains 357082 sequences. (Running on oeis4.)