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A201275 Number of nX6 0..2 arrays with every row and column nondecreasing rightwards and downwards, and the number of instances of each value within one of each other 1
1, 9, 41, 143, 442, 1260, 3113, 7331, 15969, 32737, 63942, 120318, 216392, 377902, 640970, 1055829, 1699241, 2679576, 4132842, 6267048, 9345121, 13712218, 19841970, 28343579, 39963063, 55722233, 76873873, 104958237, 141966994 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Column 6 of A201277

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..101

EXAMPLE

Some solutions for n=5

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

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

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

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

..2..2..2..2..2..2....0..2..2..2..2..2....2..2..2..2..2..2....0..2..2..2..2..2

CROSSREFS

Sequence in context: A001846 A271663 A034441 * A056243 A083584 A276780

Adjacent sequences:  A201272 A201273 A201274 * A201276 A201277 A201278

KEYWORD

nonn

AUTHOR

R. H. Hardin Nov 29 2011

STATUS

approved

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Last modified October 17 07:05 EDT 2018. Contains 316276 sequences. (Running on oeis4.)