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A223813 Number of nX4 0..2 arrays with row sums nondecreasing and column sums unimodal 1
46, 1922, 65465, 1941904, 52310070, 1313561156, 31302500115, 716436867795, 15887478421991, 343524128791643, 7277651757377395, 151618311154271042, 3115328781386015762, 63276105450145436904, 1272818850579941619368 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A223815

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..19

EXAMPLE

Some solutions for n=3

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

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

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

CROSSREFS

Sequence in context: A318044 A263190 A331707 * A324451 A162889 A163232

Adjacent sequences:  A223810 A223811 A223812 * A223814 A223815 A223816

KEYWORD

nonn

AUTHOR

R. H. Hardin Mar 27 2013

STATUS

approved

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Last modified December 4 05:52 EST 2021. Contains 349470 sequences. (Running on oeis4.)