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A220207 Number of 4Xn arrays of the minimum value of corresponding elements and their horizontal, vertical or diagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and nonincreasing columns, 0..3 4Xn array 1
20, 103, 1013, 6855, 42338, 264239, 1594229, 8996095, 47638710, 240437466, 1169737596, 5509527123, 25148632606, 111340824937, 478874919352, 2004763896933, 8184273650104, 32633248916540, 127260159420398 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 4 of A220204

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..203

EXAMPLE

Some solutions for n=3

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

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

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

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

CROSSREFS

Sequence in context: A126859 A071334 A241355 * A189950 A045768 A088831

Adjacent sequences:  A220204 A220205 A220206 * A220208 A220209 A220210

KEYWORD

nonn

AUTHOR

R. H. Hardin Dec 07 2012

STATUS

approved

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Last modified August 10 03:47 EDT 2020. Contains 336368 sequences. (Running on oeis4.)