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A236646 Number of (n+1)X(1+1) 0..2 arrays colored with the maximum plus the upper median minus the lower median minus the minimum of every 2X2 subblock 1

%I #5 Jan 29 2014 11:03:28

%S 81,484,2932,17824,108272,655100,3970468,24093844,146112996,885471428,

%T 5368434004,32556604804,197396153396,1196688738212,7255631320212,

%U 43993941478852,266737613009204,1617205521101540,9805281128974548

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

%C Column 1 of A236651

%H R. H. Hardin, <a href="/A236646/b236646.txt">Table of n, a(n) for n = 1..210</a>

%F Empirical: a(n) = a(n-1) +4*a(n-2) +60*a(n-3) +500*a(n-4) +608*a(n-5) +1064*a(n-6) +512*a(n-7) -14672*a(n-8) -18640*a(n-9) -27776*a(n-10) -53248*a(n-11)

%e Some solutions for n=5

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

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

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Jan 29 2014

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Last modified April 24 22:17 EDT 2024. Contains 371964 sequences. (Running on oeis4.)