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%I #4 Feb 06 2014 05:41:01
%S 435,5433,60958,731603,8680769,103860036,1241171131,14853266129,
%T 177774735086,2128825011971,25500522192697,305578699374348,
%U 3663085862691715,43926261284119777,526926867807057006
%N Number of (n+1)X(2+1) 0..2 arrays with the upper median of every 2X2 subblock equal
%C Column 2 of A237308
%H R. H. Hardin, <a href="/A237302/b237302.txt">Table of n, a(n) for n = 1..210</a>
%F Empirical: a(n) = 22*a(n-1) -45*a(n-2) -1470*a(n-3) +5102*a(n-4) +32822*a(n-5) -127087*a(n-6) -302816*a(n-7) +1328815*a(n-8) +1050894*a(n-9) -6431720*a(n-10) -59412*a(n-11) +14013728*a(n-12) -5375984*a(n-13) -12300032*a(n-14) +7063680*a(n-15) +3032064*a(n-16) -1935360*a(n-17)
%e Some solutions for n=3
%e ..1..1..1....0..1..1....2..0..1....2..2..2....2..0..1....1..1..1....2..2..0
%e ..2..0..2....2..0..2....1..0..2....1..2..1....1..0..1....1..2..1....1..0..2
%e ..1..0..1....0..1..0....1..1..1....2..2..0....2..0..1....0..0..1....2..2..0
%e ..2..0..1....2..1..1....2..0..2....2..1..2....0..1..0....1..2..0....1..2..2
%K nonn
%O 1,1
%A _R. H. Hardin_, Feb 06 2014
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