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A219574 Number of nX4 arrays of the minimum value of corresponding elements and their horizontal or vertical neighbors in a random, but sorted with lexicographically nondecreasing rows and nonincreasing columns, 0..3 nX4 array 1
20, 132, 1866, 18564, 154271, 1230906, 9838834, 77121132, 574114068, 4011221077, 26423019415, 165621299493, 995370542165, 5764471362464, 32276996597715, 175191988301623, 923800070721626, 4741175946914574, 23718827918983202 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A219578

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..131

EXAMPLE

Some solutions for n=3

..2..0..0..0....1..1..0..0....1..0..0..0....1..0..0..0....1..1..0..0

..1..1..0..0....2..1..1..0....2..1..0..0....1..1..0..0....3..1..1..0

..1..1..1..3....3..1..1..1....2..2..3..2....3..1..2..1....3..2..0..0

CROSSREFS

Sequence in context: A005551 A006417 A156392 * A188145 A168178 A085284

Adjacent sequences:  A219571 A219572 A219573 * A219575 A219576 A219577

KEYWORD

nonn

AUTHOR

R. H. Hardin Nov 23 2012

STATUS

approved

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Last modified January 26 23:54 EST 2022. Contains 350601 sequences. (Running on oeis4.)