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A228738 Number of arrays of the median of three adjacent elements of some length n+2 0..6 array.

%I A228738 #12 Sep 02 2013 11:58:09
%S A228738 7,49,343,1981,9191,41083,181885,819099,3749921,17338503,80437853,
%T A228738 373008019,1727505765,7991536851,36949011409,170810543525,
%U A228738 789678726959,3651141596711,16882484843753,78065155382933,360977446471839
%N A228738 Number of arrays of the median of three adjacent elements of some length n+2 0..6 array.
%C A228738 Column 6 of A228740.
%H A228738 R. H. Hardin, <a href="/A228738/b228738.txt">Table of n, a(n) for n = 1..81</a>
%e A228738 Some solutions for n=4
%e A228738 ..0..6..3..6..1..5..0..3..5..6..1..4..6..2..5..3
%e A228738 ..1..4..5..2..2..0..2..0..5..6..0..2..5..6..5..6
%e A228738 ..3..1..0..4..1..6..0..0..2..5..0..6..2..3..1..3
%e A228738 ..4..3..3..4..2..2..4..6..0..4..0..2..4..4..0..4
%K A228738 nonn
%O A228738 1,1
%A A228738 _R. H. Hardin_, Sep 01 2013