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A207015 T(n,k)=Number of nXk 0..2 arrays avoiding the patterns z z+1 z or z z-1 z in any row or column 9

%I #5 Mar 31 2012 12:37:14

%S 3,9,9,23,81,23,61,529,529,61,161,3721,7891,3721,161,425,25921,130165,

%T 130165,25921,425,1121,180625,2113177,5174065,2113177,180625,1121,

%U 2957,1256641,34303001,201211481,201211481,34303001,1256641,2957,7801,8743849

%N T(n,k)=Number of nXk 0..2 arrays avoiding the patterns z z+1 z or z z-1 z in any row or column

%C Table starts

%C ....3.......9.........23.............61...............161..................425

%C ....9......81........529...........3721.............25921...............180625

%C ...23.....529.......7891.........130165...........2113177.............34303001

%C ...61....3721.....130165........5174065.........201211481...........7825530345

%C ..161...25921....2113177......201211481.......18649387825........1728683700481

%C ..425..180625...34303001.....7825530345.....1728683700481......381916401448593

%C .1121.1256641..555815721...303753655993...159875651653873....84153991018875649

%C .2957.8743849.9009608765.11797040231217.14795926235823289.18557751920452764329

%H R. H. Hardin, <a href="/A207015/b207015.txt">Table of n, a(n) for n = 1..112</a>

%e Some solutions for n=4 k=3

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

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

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

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

%K nonn,tabl

%O 1,1

%A _R. H. Hardin_ Feb 14 2012

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Last modified September 16 17:19 EDT 2024. Contains 375976 sequences. (Running on oeis4.)