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A237843 Number of (n+1)X(1+1) 0..2 arrays with the maximum minus the lower median of every 2X2 subblock equal 1

%I #4 Feb 14 2014 06:41:47

%S 81,369,1697,8451,43061,224559,1184701,6305583,33742677,181259783,

%T 976153437,5266243663,28444748005,153767162615,831710048621,

%U 4500403551647,24358405180597,131864496867975,713942568166077

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

%C Column 1 of A237850

%H R. H. Hardin, <a href="/A237843/b237843.txt">Table of n, a(n) for n = 1..210</a>

%F Empirical: a(n) = 10*a(n-1) -10*a(n-2) -162*a(n-3) +377*a(n-4) +892*a(n-5) -2886*a(n-6) -1748*a(n-7) +9208*a(n-8) -336*a(n-9) -12832*a(n-10) +4416*a(n-11) +6144*a(n-12) -3072*a(n-13)

%e Some solutions for n=5

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

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

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Feb 14 2014

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Last modified May 3 07:04 EDT 2024. Contains 372206 sequences. (Running on oeis4.)