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A200551
Number of -6..6 arrays x(0..n+1) of n+2 elements with zero sum and nonzero second differences
1
114, 1368, 15476, 178834, 2076774, 24378976, 288237528, 3427837106, 40950125796, 491063998130, 5907663402532, 71267752107030, 861806880210532, 10443265297671942, 126784115884242080, 1541722886174306634
OFFSET
1,1
COMMENTS
Column 6 of A200553
LINKS
EXAMPLE
Some solutions for n=3
.-4....2....0...-1...-4...-3...-1....4...-2...-2....0....4...-5...-6...-2....2
..3....1....3....3....5....0...-2...-2....0....2....2....3....4....3....3...-4
.-1...-1....1...-1...-5....0....6....3....5....4...-1...-4...-3...-4....0....0
..1....0...-5....1...-2...-1...-2....1...-5...-5...-6...-2....0....6....2....6
..1...-2....1...-2....6....4...-1...-6....2....1....5...-1....4....1...-3...-4
CROSSREFS
Sequence in context: A296403 A262416 A108344 * A230464 A200891 A240386
KEYWORD
nonn
AUTHOR
R. H. Hardin Nov 19 2011
STATUS
approved