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A184497 T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with every 2X2 subblock sum greater than 4 10

%I #5 Mar 31 2012 12:36:00

%S 31,165,165,792,1983,792,3971,20514,20514,3971,19593,225739,421879,

%T 225739,19593,97312,2429833,9573698,9573698,2429833,97312,482071,

%U 26384550,209361859,460055427,209361859,26384550,482071,2390621

%N T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with every 2X2 subblock sum greater than 4

%C Table starts

%C .......31..........165..............792................3971

%C ......165.........1983............20514..............225739

%C ......792........20514...........421879.............9573698

%C .....3971.......225739..........9573698...........460055427

%C ....19593......2429833........209361859.........21093149945

%C ....97312.....26384550.......4649028105........986037480116

%C ...482071....285552669.....102612963762......45743024168833

%C ..2390621...3094453927....2270452765634....2128664486092091

%C .11850280..33517063586...50187203345248...98934614320637956

%C .58751643.363104617411.1109807953423781.4600534960538274519

%H R. H. Hardin, <a href="/A184497/b184497.txt">Table of n, a(n) for n = 1..220</a>

%e Some solutions for 4X3

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

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

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

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

%K nonn,tabl

%O 1,1

%A _R. H. Hardin_ Jan 15 2011

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Last modified April 24 20:08 EDT 2024. Contains 371963 sequences. (Running on oeis4.)