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A236013 Number of (n+1)X(3+1) 0..2 arrays colored with the sum of the maximum and minimum values of each 2X2 subblock 1

%I

%S 1276,3744,13750,34288,110274,313060,1059410,2852400,9387554,25937988,

%T 86158450,235806192,779991734,2143722636,7102177066,19487328696,

%U 64517987030,177151900644,586666746358,1610397251352,5332485179726

%N Number of (n+1)X(3+1) 0..2 arrays colored with the sum of the maximum and minimum values of each 2X2 subblock

%C Column 3 of A236018

%H R. H. Hardin, <a href="/A236013/b236013.txt">Table of n, a(n) for n = 1..210</a>

%F Empirical: a(n) = 5*a(n-2) +42*a(n-4) -21*a(n-6) -207*a(n-8) for n>13

%e Some solutions for n=5

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

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

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Jan 18 2014

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Last modified June 27 19:07 EDT 2022. Contains 354897 sequences. (Running on oeis4.)