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A199133 T(n,k)=Number of nXk 0..2 arrays with values 0..2 introduced in row major order, the number of instances of each value within one of each other, and no element equal to any horizontal or vertical neighbor 9

%I #5 Mar 31 2012 12:36:35

%S 1,1,1,1,2,1,3,2,2,3,6,12,6,12,6,5,30,19,19,30,5,19,30,70,258,70,30,

%T 19,37,210,264,1409,1409,264,210,37,29,560,1038,2836,11475,2836,1038,

%U 560,29,124,560,4155,48320,33970,33970,48320,4155,560,124,240,4200,16896,295092

%N T(n,k)=Number of nXk 0..2 arrays with values 0..2 introduced in row major order, the number of instances of each value within one of each other, and no element equal to any horizontal or vertical neighbor

%C Table starts

%C ...1....1.....1........3.........6...........5............19..............37

%C ...1....2.....2.......12........30..........30...........210.............560

%C ...1....2.....6.......19........70.........264..........1038............4155

%C ...3...12....19......258......1409........2836.........48320..........295092

%C ...6...30....70.....1409.....11475.......33970........887966.........8181546

%C ...5...30...264.....2836.....33970......438502.......5926852........82908094

%C ..19..210..1038....48320....887966.....5926852.....358599045......7633754680

%C ..37..560..4155...295092...8181546....82908094....7633754680....247746055048

%C ..29..560.16896...629776..26354800..1187201812...56435001338...2782790788798

%C .124.4200.69584.11499816.739462036.17307138986.3718131446504.280882561003836

%H R. H. Hardin, <a href="/A199133/b199133.txt">Table of n, a(n) for n = 1..180</a>

%e Some solutions for n=7 k=5

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

%e ..2..0..1..0..1....1..2..1..2..1....1..0..1..0..2....2..0..2..0..2

%e ..0..1..0..1..2....0..1..2..0..2....2..1..0..2..1....0..1..0..2..0

%e ..1..2..1..2..1....1..0..1..2..0....1..2..1..0..2....1..2..1..0..1

%e ..2..0..2..0..2....0..1..0..1..2....2..1..0..2..0....2..1..2..1..2

%e ..1..2..0..2..1....1..2..1..2..0....1..0..2..1..2....1..2..1..2..1

%e ..0..1..2..0..2....2..0..2..0..2....0..2..0..2..1....0..1..2..0..2

%K nonn,tabl

%O 1,5

%A _R. H. Hardin_ Nov 03 2011

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Last modified April 18 16:22 EDT 2024. Contains 371780 sequences. (Running on oeis4.)