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A202509 Number of zero-sum -6..6 arrays of n elements with first through third differences also in -6..6 1
1, 7, 47, 217, 1041, 5429, 29295, 161469, 890659, 4953959, 27653867, 154912145, 870424381, 4906927687, 27742701519, 157251702011, 893270398075, 5083772866943, 28979759201581, 165434751255111, 945621770041509 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
Column 6 of A202511
LINKS
EXAMPLE
Some solutions for n=7
..1...-3....3...-4....5...-2....5...-5....3....5....1....0...-6....2....0...-4
.-2....3....4....1....2...-2...-1...-1...-1....2....3....0...-6...-1....6...-4
.-5....5....3....0....2...-3...-2....3...-1....3....2...-1...-2...-1....6...-4
.-3....2....2...-2...-1....1...-2....2....2....2....1....1....2....1....2....0
.-1...-1...-2...-1...-3....4....0....1....2...-1....0....1....4....2...-3....3
..4...-4...-6....0...-2....3....2...-1....0...-5...-1....1....6...-1...-6....4
..6...-2...-4....6...-3...-1...-2....1...-5...-6...-6...-2....2...-2...-5....5
CROSSREFS
Sequence in context: A152988 A336789 A201437 * A009202 A093112 A091516
KEYWORD
nonn
AUTHOR
R. H. Hardin Dec 20 2011
STATUS
approved

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Last modified February 24 11:15 EST 2024. Contains 370303 sequences. (Running on oeis4.)