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A200176 Number of -3..3 arrays x(0..n-1) of n elements with zero sum and no two consecutive declines, no adjacent equal elements, and no element more than one greater than the previous (random base sawtooth pattern).

%I A200176 #7 Jun 02 2025 07:17:11
%S A200176 1,3,5,11,15,29,78,160,283,574,1428,3087,5800,12563,30105,63994,
%T A200176 128826,285423,656667,1407398,2951141,6564161,14805297,31974359,
%U A200176 68620812,152674200,340729396,740843841,1612122145,3583332695,7954071929
%N A200176 Number of -3..3 arrays x(0..n-1) of n elements with zero sum and no two consecutive declines, no adjacent equal elements, and no element more than one greater than the previous (random base sawtooth pattern).
%C A200176 Column 3 of A200181
%H A200176 R. H. Hardin, <a href="/A200176/b200176.txt">Table of n, a(n) for n = 1..200</a>
%e A200176 Some solutions for n=6
%e A200176 ..1....3....1....3....1....1....2....3....2....1....2....3....0....0....1....0
%e A200176 ..0...-2...-1....1...-1....2....3....2....1....2....0....1...-1...-2...-1....1
%e A200176 ..1...-1....0....2....0....3...-2....3....2....3....1....2....0...-1....0....2
%e A200176 .-1....0....1...-3...-1...-2...-1...-3...-2...-3...-1...-2....1....0....1...-1
%e A200176 ..0....1....2...-2....0...-1....0...-2...-1...-2....0...-1....2....1...-1....0
%e A200176 .-1...-1...-3...-1....1...-3...-2...-3...-2...-1...-2...-3...-2....2....0...-2
%K A200176 nonn
%O A200176 1,2
%A A200176 _R. H. Hardin_ Nov 13 2011