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A222769 T(n,k)=Number of nXk 0..1 arrays with exactly floor(nXk/2) elements unequal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..1 order 14

%I #4 Mar 05 2013 03:04:13

%S 1,0,0,0,3,0,3,4,4,0,4,11,13,20,0,4,18,66,96,48,0,5,73,158,465,301,

%T 175,0,20,152,934,2608,3431,2242,512,0,27,470,2446,15077,19766,25772,

%U 7575,1719,0,48,1022,14567,89811,256546,333978,196185,55958,5400,0,63,3361,39972

%N T(n,k)=Number of nXk 0..1 arrays with exactly floor(nXk/2) elements unequal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..1 order

%C Table starts

%C .1......0........0..........3............4...............4.................5

%C .0......3........4.........11...........18..............73...............152

%C .0......4.......13.........66..........158.............934..............2446

%C .0.....20.......96........465.........2608...........15077.............89811

%C .0.....48......301.......3431........19766..........256546...........1570588

%C .0....175.....2242......25772.......333978.........4479721..........62017670

%C .0....512.....7575.....196185......2645385........79612578........1139211468

%C .0...1719....55958....1508369.....45830457......1432512703.......46316300783

%C .0...5400...196442...11685222....370518626.....26011740182......872037778022

%C .0..17776..1448568...91068653...6504289924....475591230143....36016907441620

%C .0..57420..5188656..713197411..53224723750...8742929996332...687733392122744

%C .0.188656.38338122.5607868082.942396671062.161434491485598.28680675666813436

%H R. H. Hardin, <a href="/A222769/b222769.txt">Table of n, a(n) for n = 1..239</a>

%e Some solutions for n=3 k=4

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

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

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

%Y Row 1 is A222283

%K nonn,tabl

%O 1,5

%A _R. H. Hardin_ Mar 05 2013

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Last modified April 18 22:18 EDT 2024. Contains 371782 sequences. (Running on oeis4.)