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Number of (n+1)X(2+1) 0..3 arrays with the maximum plus the upper median plus the lower median of every 2X2 subblock equal
1

%I #5 Aug 11 2014 22:46:09

%S 888,3852,16212,85064,429108,2380742,12891190,73033832,407662600,

%T 2333365070,13220203386,76129805278,435052159304,2515577967734,

%U 14458394715076,83858270702244,484060453024772,2814490812097076

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

%C Column 2 of A236987

%H R. H. Hardin, <a href="/A236981/b236981.txt">Table of n, a(n) for n = 1..210</a>

%H R. H. Hardin, <a href="/A236981/a236981.txt">Empirical recurrence of order 92</a>

%F Empirical recurrence of order 92 (see link above)

%e Some solutions for n=4

%e ..2..3..3....3..1..3....3..0..1....1..1..1....3..3..1....3..0..2....1..2..2

%e ..3..3..0....2..3..2....1..0..3....1..2..0....2..3..3....0..3..1....2..2..2

%e ..0..3..3....3..1..3....2..1..0....1..1..1....3..3..3....2..1..2....1..2..2

%e ..3..3..0....3..2..3....0..1..2....2..1..2....2..3..1....1..3..0....2..2..2

%e ..3..3..3....0..3..1....2..1..1....1..1..0....3..3..3....2..1..2....1..2..2

%K nonn

%O 1,1

%A _R. H. Hardin_, Feb 02 2014