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A223663 T(n,k)=Number of nXk 0..3 arrays with row sums unimodal and column sums inverted unimodal 6
4, 16, 16, 50, 256, 50, 130, 3060, 3060, 130, 296, 29922, 141046, 29922, 296, 610, 252912, 5285887, 5285887, 252912, 610, 1163, 1912914, 169756788, 761845474, 169756788, 1912914, 1163, 2083, 13254601, 4836834467, 93974096640, 93974096640 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Table starts

....4........16............50..............130...............296

...16.......256..........3060............29922............252912

...50......3060........141046..........5285887.........169756788

..130.....29922.......5285887........761845474.......93974096640

..296....252912.....169756788......93974096640....44626165058452

..610...1912914....4836834467...10253839694278.18744540823704239

.1163..13254601..125226945708.1013084819998517

.2083..85563043.2997363216275

.3544.521069404

.5776

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..59

EXAMPLE

Some solutions for n=3 k=4

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

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

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

CROSSREFS

Sequence in context: A223811 A223762 A223850 * A224113 A223876 A223801

Adjacent sequences:  A223660 A223661 A223662 * A223664 A223665 A223666

KEYWORD

nonn,tabl

AUTHOR

R. H. Hardin Mar 25 2013

STATUS

approved

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Last modified May 22 11:06 EDT 2022. Contains 353949 sequences. (Running on oeis4.)