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A236669 T(n,k)=Number of (n+1)X(k+1) 0..2 arrays colored with the maximum plus the lower median minus the upper median minus the minimum of every 2X2 subblock 6

%I #4 Jan 29 2014 14:57:37

%S 81,452,452,2608,3720,2608,14760,30352,30352,14760,84948,250708,

%T 368090,250708,84948,484400,2079296,4434788,4434788,2079296,484400,

%U 2771648,17174856,55108806,82202172,55108806,17174856,2771648,15802528,141244420

%N T(n,k)=Number of (n+1)X(k+1) 0..2 arrays colored with the maximum plus the lower median minus the upper median minus the minimum of every 2X2 subblock

%C Table starts

%C ........81.........452...........2608...........14760...........84948

%C .......452........3720..........30352..........250708.........2079296

%C ......2608.......30352.........368090.........4434788........55108806

%C .....14760......250708........4434788........82202172......1533811128

%C .....84948.....2079296.......55108806......1533811128.....44409371442

%C ....484400....17174856......664310024.....28390507456...1243675317240

%C ...2771648...141244420.....8131629834....520848836744..35244374739432

%C ..15802528..1164128912....98186159604...9689359336344.998449131759624

%C ..90361616..9621726624..1210293445866.180751835666464

%C .516384576.79482813380.14656239076752

%H R. H. Hardin, <a href="/A236669/b236669.txt">Table of n, a(n) for n = 1..84</a>

%F Empirical for column k:

%F k=1: a(n) = 2*a(n-1) +436*a(n-4) +888*a(n-5) +2304*a(n-6) +5760*a(n-7)

%F k=2: [order 15]

%e Some solutions for n=2 k=4

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

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

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

%K nonn,tabl

%O 1,1

%A _R. H. Hardin_, Jan 29 2014

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Last modified April 19 18:00 EDT 2024. Contains 371797 sequences. (Running on oeis4.)