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A211591
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, six or eight distinct values for every i,j,k<=n
1
24, 108, 342, 986, 2600, 6776, 17064, 43310, 108434, 274934, 693672, 1773284, 4527672, 11702070, 30251214, 79047138, 206675020, 545332484, 1439676080, 3829694670, 10190585358, 27284478782, 73058107616, 196594473356
OFFSET
1,1
LINKS
EXAMPLE
Some solutions for n=5
.-1....0....2....1...-1...-1....2...-2....0....1...-2....0...-2....1...-1....2
.-1....1...-2...-2...-1....2....1....1...-1....2....0....1...-2...-1...-2...-1
..0....2....2....2...-2....2....0...-2...-1...-2...-2...-2...-2....1...-1...-2
.-1....1....2....2....0....2....1....2...-1....2....1...-1....2...-2....2...-1
.-1....2....2...-2...-2....2...-2...-2...-1....2...-2....0....2....1...-1...-2
.-1....0...-1....1....0....2....1....0...-1....2....1...-1....1...-1....2...-2
CROSSREFS
Sequence in context: A187163 A211577 A101862 * A211585 A211599 A282211
KEYWORD
nonn
AUTHOR
R. H. Hardin Apr 16 2012
STATUS
approved