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A278726 Number of nX7 0..3 arrays with rows in nondecreasing lexicographic order and columns in nonincreasing lexicographic order. 0
120, 28288, 18151220, 19328645044, 23161560633508, 26947618206791521, 29201160476766771330, 29243132244492451384902 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 7 of A278727.

LINKS

Table of n, a(n) for n=1..8.

EXAMPLE

Some solutions for n=2

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

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

CROSSREFS

Cf. A278727.

Sequence in context: A270604 A151604 A104008 * A227667 A054778 A230729

Adjacent sequences:  A278723 A278724 A278725 * A278727 A278728 A278729

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 27 2016

STATUS

approved

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Last modified September 28 17:43 EDT 2020. Contains 337393 sequences. (Running on oeis4.)