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A207918 T(n,k)=Number of nXk 0..1 arrays avoiding 0 0 0 and 1 0 1 horizontally and 0 1 0 and 1 0 1 vertically 10

%I #5 Mar 31 2012 12:37:20

%S 2,4,4,6,16,6,9,36,36,10,13,81,98,100,16,19,169,271,358,256,26,28,361,

%T 665,1309,1152,676,42,41,784,1675,4181,5371,3910,1764,68,60,1681,4344,

%U 13759,21145,23637,12994,4624,110,88,3600,11081,46800,86255,117835

%N T(n,k)=Number of nXk 0..1 arrays avoiding 0 0 0 and 1 0 1 horizontally and 0 1 0 and 1 0 1 vertically

%C Table starts

%C ..2....4.....6......9......13.......19........28.........41..........60

%C ..4...16....36.....81.....169......361.......784.......1681........3600

%C ..6...36....98....271.....665.....1675......4344......11081.......28136

%C .10..100...358...1309....4181....13759.....46800.....156135......518564

%C .16..256..1152...5371...21145....86255....366330....1520815.....6276388

%C .26..676..3910..23637..117835...612439...3327954...17621905....92785236

%C .42.1764.12994.101069..628945..4105063..28188778..187980955..1245595210

%C .68.4624.43596.438103.3426491.28280693.247024548.2088382007.17532981294

%H R. H. Hardin, <a href="/A207918/b207918.txt">Table of n, a(n) for n = 1..418</a>

%e Some solutions for n=4 k=3

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

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

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

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

%Y Column 1 is A006355(n+2)

%Y Column 2 is A206981

%Y Column 3 is A207462

%Y Row 1 is A000930(n+3)

%Y Row 2 is A207170

%Y Row 3 is A207306

%K nonn,tabl

%O 1,1

%A _R. H. Hardin_ Feb 21 2012

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Last modified April 23 08:33 EDT 2024. Contains 371905 sequences. (Running on oeis4.)