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%I #4 Feb 03 2014 05:25:27
%S 256,2132,15882,128988,1042300,8613338,71747464,604396964,5132149170,
%T 43910139636,378007127116,3271425891026,28436225035504,
%U 248077289597684,2170686359190426,19040036742791820,167340548970850396
%N Number of (n+1)X(1+1) 0..3 arrays with the upper median of every 2X2 subblock equal
%C Column 1 of A237076
%H R. H. Hardin, <a href="/A237069/b237069.txt">Table of n, a(n) for n = 1..210</a>
%F Empirical: a(n) = 20*a(n-1) -80*a(n-2) -614*a(n-3) +3996*a(n-4) +6360*a(n-5) -60341*a(n-6) -25592*a(n-7) +404984*a(n-8) +30176*a(n-9) -1229712*a(n-10) +1327104*a(n-12)
%e Some solutions for n=4
%e ..2..2....2..2....1..3....0..3....2..0....1..0....0..2....2..0....2..0....1..3
%e ..3..1....3..2....1..1....2..1....3..0....1..1....0..2....3..0....2..3....2..2
%e ..2..0....1..2....3..0....1..2....2..0....1..0....3..0....0..2....2..1....2..3
%e ..3..2....0..2....1..1....0..2....2..2....0..1....0..2....0..2....2..3....1..2
%e ..0..0....3..0....0..0....2..0....3..0....1..3....2..0....2..0....2..2....3..1
%K nonn
%O 1,1
%A _R. H. Hardin_, Feb 03 2014
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