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 A211577 Number of -2..2 arrays x(i) of n+1 elements i=1..n+1 with set{t,u,v in 0,1}((x[i+t]+x[j+u]+x[k+v])*(-1)^(t+u+v)) having two, four, five or six distinct values for every i,j,k<=n 1

%I

%S 24,108,294,702,1560,3464,7448,16498,35766,80586,178192,410044,925128,

%T 2169774,4976710,11850650,27515436,66271404,155211372,376977262,

%U 888276502,2170805230,5137041172,12612008268,29937248660,73756347602

%N Number of -2..2 arrays x(i) of n+1 elements i=1..n+1 with set{t,u,v in 0,1}((x[i+t]+x[j+u]+x[k+v])*(-1)^(t+u+v)) having two, four, five or six distinct values for every i,j,k<=n

%H R. H. Hardin, <a href="/A211577/b211577.txt">Table of n, a(n) for n = 1..37</a>

%e Some solutions for n=5

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

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

%e .-2....1...-2...-1...-2....1...-1...-1...-1...-2....2....1....2....2...-2...-1

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Apr 16 2012

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Last modified August 16 11:28 EDT 2022. Contains 356168 sequences. (Running on oeis4.)