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 A200177 Number of -4..4 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

%S 1,4,5,14,24,48,100,280,608,1094,2558,6656,14475,29638,69174,170043,

%T 384938,830598,1910747,4608078,10600467,23514477,54265809,129118292,

%U 298774740,676277578,1564120363,3687870415,8572421420,19643806169

%N Number of -4..4 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 4 of A200181

%H R. H. Hardin, <a href="/A200177/b200177.txt">Table of n, a(n) for n = 1..200</a>

%e Some solutions for n=6

%e ..2....0....1....1....3....0....4....3....3....0....4....2....0....2....1....2

%e ..3....1....2....2...-1...-2....2....4....0....1....3....0....1...-2....2....1

%e ..4....2....3...-1....0...-1....3...-2....1....2....4....1...-1...-1....3....2

%e .-3...-2...-2....0....1....0...-4...-1...-1...-1...-4....2....0....0...-3...-1

%e .-2...-1...-1....1...-2....1...-3....0....0....0...-3...-3....1....1...-2....0

%e .-4....0...-3...-3...-1....2...-2...-4...-3...-2...-4...-2...-1....0...-1...-4

%K nonn

%O 1,2

%A _R. H. Hardin_ Nov 13 2011

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Last modified March 30 13:03 EDT 2023. Contains 361618 sequences. (Running on oeis4.)