cp's OEIS Frontend

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).

%I A200177 #7 Jun 02 2025 07:17:18
%S A200177 1,4,5,14,24,48,100,280,608,1094,2558,6656,14475,29638,69174,170043,
%T A200177 384938,830598,1910747,4608078,10600467,23514477,54265809,129118292,
%U A200177 298774740,676277578,1564120363,3687870415,8572421420,19643806169
%N 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).
%C A200177 Column 4 of A200181
%H A200177 R. H. Hardin, <a href="/A200177/b200177.txt">Table of n, a(n) for n = 1..200</a>
%e A200177 Some solutions for n=6
%e A200177 ..2....0....1....1....3....0....4....3....3....0....4....2....0....2....1....2
%e A200177 ..3....1....2....2...-1...-2....2....4....0....1....3....0....1...-2....2....1
%e A200177 ..4....2....3...-1....0...-1....3...-2....1....2....4....1...-1...-1....3....2
%e A200177 .-3...-2...-2....0....1....0...-4...-1...-1...-1...-4....2....0....0...-3...-1
%e A200177 .-2...-1...-1....1...-2....1...-3....0....0....0...-3...-3....1....1...-2....0
%e A200177 .-4....0...-3...-3...-1....2...-2...-4...-3...-2...-4...-2...-1....0...-1...-4
%K A200177 nonn
%O A200177 1,2
%A A200177 _R. H. Hardin_ Nov 13 2011