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A223892 T(n,k)=Number of nXk 0..2 arrays with row sums and column sums unimodal 3
3, 9, 9, 22, 81, 22, 46, 564, 564, 46, 86, 3298, 11264, 3298, 86, 148, 17048, 187103, 187103, 17048, 148, 239, 80412, 2719602, 8878492, 2719602, 80412, 239, 367, 353485, 35688774, 367772497, 367772497, 35688774, 353485, 367, 541, 1469903, 432076735 (list; table; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Table starts
...3.......9.........22...........46............86...........148
...9......81........564.........3298.........17048.........80412
..22.....564......11264.......187103.......2719602......35688774
..46....3298.....187103......8878492.....367772497...13710418065
..86...17048....2719602....367772497...43541049634.4638776041518
.148...80412...35688774..13710418065.4638776041518
.239..353485..432076735.469842794992
.367.1469903.4902528769
.541.5845411
.771
LINKS
EXAMPLE
Some solutions for n=3 k=4
..0..2..1..1....0..0..2..0....1..0..1..0....0..1..0..1....0..0..2..0
..2..2..1..0....1..2..1..2....2..2..0..1....1..1..2..1....0..1..1..2
..2..2..0..1....1..2..1..2....2..1..2..0....2..2..2..2....1..1..2..1
CROSSREFS
Column 1 is A223718
Sequence in context: A223725 A223831 A223885 * A223789 A223975 A226852
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin Mar 28 2013
STATUS
approved

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Last modified April 14 07:36 EDT 2024. Contains 371655 sequences. (Running on oeis4.)