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A219932 Number of n X n arrays of the minimum value of corresponding elements and their horizontal or diagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and nonincreasing columns, 0..3 n X n array 0
4, 23, 368, 21512, 3773045, 2574187888 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Diagonal of A219939

LINKS

Table of n, a(n) for n=1..6.

EXAMPLE

Some solutions for n=3

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

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

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

CROSSREFS

Sequence in context: A327367 A303652 A130890 * A266919 A219464 A107765

Adjacent sequences:  A219929 A219930 A219931 * A219933 A219934 A219935

KEYWORD

nonn

AUTHOR

R. H. Hardin Dec 01 2012

STATUS

approved

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Last modified May 24 12:01 EDT 2022. Contains 354033 sequences. (Running on oeis4.)