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A235906 Number of (n+1)X(3+1) 0..2 arrays with the minimum plus the maximum unequal to the lower median plus the upper median in every 2X2 subblock 1

%I #4 Jan 16 2014 15:51:42

%S 1408,26408,499136,9533120,181855488,3481713664,66562286592,

%T 1274524104704,24381793964032,466787561906176,8931943648346112,

%U 170980467157925888,3272077297963827200,62631436553438232576

%N Number of (n+1)X(3+1) 0..2 arrays with the minimum plus the maximum unequal to the lower median plus the upper median in every 2X2 subblock

%C Column 3 of A235911

%H R. H. Hardin, <a href="/A235906/b235906.txt">Table of n, a(n) for n = 1..210</a>

%F Empirical: a(n) = 6*a(n-1) +396*a(n-2) -1048*a(n-3) -38944*a(n-4) +61312*a(n-5) +1096192*a(n-6) -877056*a(n-7) -1101824*a(n-8) +851968*a(n-9)

%e Some solutions for n=2

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Jan 16 2014

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Last modified April 18 06:24 EDT 2024. Contains 371769 sequences. (Running on oeis4.)