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 A200159 Number of -2..2 arrays x(0..n-1) of n elements with nonzero sum and with zero through n-1 differences all nonzero 0
 4, 8, 34, 76, 276, 700, 2276, 5992, 18542, 50488, 151814, 420680, 1241580, 3481308, 10162686, 28707288, 83211126, 236138900, 681383716, 1939299184, 5579324890, 15908310224, 45678520824, 130391096068 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Column 2 of A200165 LINKS EXAMPLE Some solutions for n=5 ..2...-2...-1...-2....2...-1....1...-2...-2....1....2....1...-1....2...-1...-2 .-1...-1...-2....1....1....1....2....2....1...-1...-2...-1....2....1....1....1 .-2....2...-1...-1....2....2...-2...-1....2....1....2....1...-1...-2...-2...-1 ..1...-2....1...-2...-1...-1....2...-2...-1...-2...-1...-1....1....2...-1...-2 .-1....1....2...-1...-2....2...-2....2....2...-1....1....1....2....1...-2....2 CROSSREFS Sequence in context: A149102 A149103 A039303 * A149104 A149105 A149106 Adjacent sequences:  A200156 A200157 A200158 * A200160 A200161 A200162 KEYWORD nonn AUTHOR R. H. Hardin Nov 13 2011 STATUS approved

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Last modified June 19 15:58 EDT 2021. Contains 345144 sequences. (Running on oeis4.)