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A236349 Number of (n+1)X(1+1) 0..2 arrays colored with the sum of the upper and lower median values of each 2X2 subblock 1

%I

%S 81,462,2588,14952,86800,498976,2868608,16528896,95237312,548375168,

%T 3157831104,18187196288,104744570304,603223995008,3474009593280,

%U 20007251750272,115223864129984,663584670077056,3821648785574336

%N Number of (n+1)X(1+1) 0..2 arrays colored with the sum of the upper and lower median values of each 2X2 subblock

%C Column 1 of A236354

%H R. H. Hardin, <a href="/A236349/b236349.txt">Table of n, a(n) for n = 1..210</a>

%F Empirical: a(n) = 9*a(n-2) +64*a(n-3) +304*a(n-4) +596*a(n-5) +912*a(n-6) +176*a(n-7) -2528*a(n-8) -3648*a(n-9) -2048*a(n-10)

%e Some solutions for n=5

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

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

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Jan 23 2014

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Last modified October 25 20:03 EDT 2021. Contains 348255 sequences. (Running on oeis4.)