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%I #4 Nov 22 2014 19:29:46
%S 15,232,927,11906,84094,845358,6847916,60473968,493271080,4110606460,
%T 33227112639,270174922792,2170847791630,17476736034672,
%U 140045328565480,1123079823815258,8990031255733660,71987420633900826,576024775450468215
%N Number of length n+1 0..7 arrays with the sum of the minimum of each adjacent pair multiplied by some arrangement of +-1 equal to zero
%C Column 7 of A250419
%H R. H. Hardin, <a href="/A250418/b250418.txt">Table of n, a(n) for n = 1..23</a>
%e Some solutions for n=5
%e ..0....2....7....2....7....2....7....7....2....3....0....2....2....6....0....2
%e ..7....4....2....1....0....5....0....6....6....6....5....0....5....5....4....2
%e ..3....6....4....7....0....4....5....6....2....2....3....0....5....2....0....6
%e ..6....6....2....1....4....1....1....1....6....2....5....6....3....6....3....0
%e ..0....2....4....4....0....3....5....2....5....3....4....0....0....7....1....0
%e ..1....4....0....5....7....2....0....6....3....4....7....3....1....7....2....6
%K nonn
%O 1,1
%A _R. H. Hardin_, Nov 22 2014
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