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 A199942 Number of -7..7 arrays x(0..n-1) of n elements with zeroth through n-1st differences all nonzero 0
 14, 182, 2294, 28490, 351148, 4310382, 52799912, 646091920, 7901341926 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Column 7 of A199943 LINKS EXAMPLE Some solutions for n=6 .-7...-7....1....1...-7...-7...-7...-7...-7....1...-7...-7...-7...-7....1...-7 ..2....1...-7...-6...-6....1...-6...-6....2...-6....2....2....1...-6...-7....1 ..7....6....7...-4....2....7...-4...-3....4...-3...-6....4...-2....3....2....7 .-4...-7....2....1....6...-2...-6....6...-2....7...-1....5....2...-2...-5....1 .-2....6....3...-2...-7....5...-3....4....2...-3...-6...-7....4....4....6...-1 ..2....3...-4....3....5....1...-2...-1....7...-5....5....2....7....5...-1...-7 CROSSREFS Sequence in context: A133286 A163416 A162783 * A097828 A030008 A163090 Adjacent sequences:  A199939 A199940 A199941 * A199943 A199944 A199945 KEYWORD nonn AUTHOR R. H. Hardin Nov 12 2011 STATUS approved

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