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A199943
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T(n,k)=Number of -k..k arrays x(0..n-1) of n elements with zeroth through n-1st differences all nonzero
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12
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2, 4, 2, 6, 12, 2, 8, 30, 36, 2, 10, 56, 142, 104, 2, 12, 90, 376, 660, 302, 2, 14, 132, 778, 2474, 3042, 868, 2, 16, 182, 1404, 6604, 16114, 13890, 2490, 2, 18, 240, 2294, 14696, 55540, 104268, 63260, 7132, 2, 20, 306, 3504, 28490, 152586, 464782, 672866, 287514
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OFFSET
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1,1
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COMMENTS
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Table starts
.2.....4.......6.........8.........10..........12.........14.........16
.2....12......30........56.........90.........132........182........240
.2....36.....142.......376........778........1404.......2294.......3504
.2...104.....660......2474.......6604.......14696......28490......50448
.2...302....3042.....16114......55540......152586.....351148.....721324
.2...868...13890....104268.....464782.....1577040....4310382...10274388
.2..2490...63260....672866....3879760....16261206...52799912..146068736
.2..7132..287514...4334232...32334096...167447004..646091920.2074543774
.2.20424.1305394..27893374..269266622..1723164176.7901341926
.2.58418.5924042.179433990.2241467296.17727091612
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LINKS
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EXAMPLE
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Some solutions for n=7 k=6
..2...-4...-4....6....3....2....4...-6....6....2...-2...-5....2...-3....2...-4
.-3...-3....4...-6...-6....1...-3...-3....4...-6...-3....1....4....1....1...-6
..1...-6...-6....1...-3...-6...-6...-6...-6...-3...-6....4...-6...-6...-3....1
.-6....4...-3...-6...-6...-3...-3....1....1....4...-3....1...-3....1....4....4
.-2...-4...-4....5....6...-4....5...-1....5....3...-4...-6....2....6....2...-6
..3....2....5...-2...-6....5...-5....5...-5....6...-2...-3....6....1....5...-5
.-3....1...-6....4....1...-6....4...-3....4....4...-6....1...-3...-6....1...-3
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CROSSREFS
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KEYWORD
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AUTHOR
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STATUS
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approved
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