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A222862 T(n,k)=Number of nXk 0..1 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 9

%I

%S 2,3,3,6,6,6,10,18,18,10,20,41,108,41,20,36,123,410,410,123,36,74,310,

%T 2460,2262,2460,310,74,137,957,11160,22620,22620,11160,957,137,282,

%U 2530,70818,156436,452400,156436,70818,2530,282,536,7848,346610,1672630

%N T(n,k)=Number of nXk 0..1 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

%C Table starts

%C ....2......3.........6...........10.............20..............36

%C ....3......6........18...........41............123.............310

%C ....6.....18.......108..........410...........2460...........11160

%C ...10.....41.......410.........2262..........22620..........156436

%C ...20....123......2460........22620.........452400.........5631696

%C ...36....310.....11160.......156436........5631696.......113936464

%C ...74....957.....70818......1672630......123774620......4591340316

%C ..137...2530....346610.....12777951.....1750579287....108296570876

%C ..282...7848...2213136....137893630....38886003660...4422968648712

%C ..536..21618..11587248...1149894920...616343677120.119741989131520

%C .1100..67131..73844100..12404839040.13645322944000

%C .2117.188835.399763695.108106327001

%H R. H. Hardin, <a href="/A222862/b222862.txt">Table of n, a(n) for n = 1..127</a>

%e Some solutions for n=3 k=4

%e ..0..0..0..0....0..0..0..1....0..1..1..1....0..0..0..0....0..0..1..0

%e ..0..0..1..0....0..1..1..1....0..1..1..1....0..1..0..1....0..1..0..1

%e ..0..1..1..1....0..0..0..1....0..1..1..1....0..1..1..1....0..0..1..1

%K nonn,tabl

%O 1,1

%A _R. H. Hardin_ Mar 07 2013

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Last modified September 25 16:13 EDT 2020. Contains 337344 sequences. (Running on oeis4.)