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 A200174 Number of -1..1 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) 1

%I #6 Mar 31 2012 12:36:38

%S 1,1,3,3,2,6,10,7,12,28,29,29,70,105,96,169,327,363,449,914,1302,1426,

%T 2455,4220,5030,6925,12579,17582,21687,36154,57823,73301,106333,

%U 179101,250064,332708,538040,825039,1097810,1630708,2613839,3676575,5125886

%N Number of -1..1 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 1 of A200181

%H R. H. Hardin, <a href="/A200174/b200174.txt">Table of n, a(n) for n = 1..200</a>

%e All solutions for n=6

%e .-1...-1....1....0....1....1

%e ..0....0...-1....1....0...-1

%e ..1....1....0...-1....1....0

%e .-1....0...-1....0...-1....1

%e ..0....1....0....1....0...-1

%e ..1...-1....1...-1...-1....0

%K nonn

%O 1,3

%A _R. H. Hardin_ Nov 13 2011

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Last modified June 8 07:26 EDT 2023. Contains 363157 sequences. (Running on oeis4.)