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

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

%S 770,4452,23675,145124,867928,5547565,35115362,230220290,1500418737,

%T 9979134414,66066562702,442916187885,2958522185818,19923334638002,

%U 133790392575191,903336231699074,6086437605131820,41161020768714147

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

%C Column 3 of A236789

%H R. H. Hardin, <a href="/A236784/b236784.txt">Table of n, a(n) for n = 1..210</a>

%H R. H. Hardin, <a href="/A236784/a236784.txt">Empirical recurrence of order 83</a>

%F Empirical recurrence of order 83 (see link above)

%e Some solutions for n=4

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

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Jan 31 2014