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A223991 Number of 6Xn 0..3 arrays with rows unimodal and columns nondecreasing 1
84, 7056, 325120, 9647292, 204647416, 3322756326, 43307637038, 469239396496, 4340915844892, 35013234463686, 250416999823220, 1610131956940138, 9414450936518133, 50540930874984955, 251164546472066722 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 6 of A223987

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..210

R. H. Hardin, Empirical polynomial of degree 36

FORMULA

Empirical polynomial of degree 36 (see link above)

EXAMPLE

Some solutions for n=3

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

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

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

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

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

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

CROSSREFS

Sequence in context: A224177 A223869 A224389 * A224022 A283947 A265586

Adjacent sequences:  A223988 A223989 A223990 * A223992 A223993 A223994

KEYWORD

nonn

AUTHOR

R. H. Hardin Mar 30 2013

STATUS

approved

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Last modified January 24 21:08 EST 2022. Contains 350565 sequences. (Running on oeis4.)