|
%I #5 Mar 31 2012 12:36:38
%S 1,6,7,26,48,103,246,700,1573,3247,8034,21608,50100,109071,268358,
%T 690150,1629202,3709231,9026969,22707455,54349757,126747830,308139152,
%U 765740522,1845805544,4379391584,10654557350,26290537792,63724232354,152906665554
%N Number of -6..6 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 Column 6 of A200181
%H R. H. Hardin, <a href="/A200179/b200179.txt">Table of n, a(n) for n = 1..200</a>
%e Some solutions for n=6
%e ..5....0....4....3....3....6....2....3....2....1....4....4....3....2....0....4
%e ..1....1....5....2....1...-2....0...-1....3....2....2....1....1....0....1...-1
%e ..2....2....6....3....2...-1....1....0....4....3....3....2....2....1....2....0
%e .-2...-1...-6...-2...-3....0....0....1...-2...-2...-4...-1...-2....2....1....1
%e .-1....0...-5...-1...-2...-2....1....2...-1...-1...-3....0...-1...-3....2....2
%e .-5...-2...-4...-5...-1...-1...-4...-5...-6...-3...-2...-6...-3...-2...-6...-6
%K nonn
%O 1,2
%A _R. H. Hardin_ Nov 13 2011
|
