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A223048 T(n,k)=Number of nXk 0..2 arrays with every row and column least squares fitting to a nonnegative slope straight line, with a single point array taken as having zero slope 5
3, 6, 6, 18, 20, 18, 45, 120, 120, 45, 141, 536, 2160, 536, 141, 386, 3378, 24120, 24120, 3378, 386, 1191, 17362, 476298, 570915, 476298, 17362, 1191, 3402, 108534, 6701732, 28942155, 28942155, 6701732, 108534, 3402, 10446, 597935, 129263994, 932439860 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Table starts

.....3.......6.........18..........45..........141..........386...........1191

.....6......20........120.........536.........3378........17362.........108534

....18.....120.......2160.......24120.......476298......6701732......129263994

....45.....536......24120......570915.....28942155....932439860....46018580355

...141....3378.....476298....28942155...4832534313.441127163210.70296226768557

...386...17362....6701732...932439860.441127163210

..1191..108534..129263994.46018580355

..3402..597935.2034174870

.10446.3721248

.30294

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..60

EXAMPLE

Some solutions for n=3 k=4

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

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

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

CROSSREFS

Sequence in context: A103463 A265026 A304335 * A319446 A181372 A168426

Adjacent sequences:  A223045 A223046 A223047 * A223049 A223050 A223051

KEYWORD

nonn,tabl

AUTHOR

R. H. Hardin Mar 12 2013

STATUS

approved

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Last modified October 25 17:22 EDT 2021. Contains 348255 sequences. (Running on oeis4.)