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A200445 Number of 0..n arrays x(0..8) of 9 elements with zero 4th differences 1
2, 3, 4, 5, 6, 9, 12, 17, 22, 37, 52, 71, 94, 117, 148, 197, 250, 305, 364, 453, 546, 655, 768, 897, 1050, 1227, 1412, 1623, 1846, 2121, 2400, 2729, 3066, 3417, 3824, 4289, 4774, 5285, 5812, 6447, 7094, 7799, 8516, 9309, 10190, 11117, 12072, 13101, 14170 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Row 5 of A200443
LINKS
EXAMPLE
Some solutions for n=10
.10....5....9....8....8...10....3...10....7....6....3....0....2....1....9....7
..9....5....9....4....7....6....3....3...10....3....7....1....6....5....8....3
..8....5....9....3....6....3....3....0...10....1....8....2....7....6....7....2
..7....5....9....4....5....1....3....0....8....0....7....3....6....5....6....3
..6....5....9....6....4....0....3....2....5....0....5....4....4....3....5....5
..5....5....9....8....3....0....3....5....2....1....3....5....2....1....4....7
..4....5....9....9....2....1....3....8....0....3....2....6....1....0....3....8
..3....5....9....8....1....3....3...10....0....6....3....7....2....1....2....7
..2....5....9....4....0....6....3...10....3...10....7....8....6....5....1....3
CROSSREFS
Sequence in context: A178715 A018123 A105859 * A255362 A017833 A114044
KEYWORD
nonn
AUTHOR
R. H. Hardin Nov 18 2011
STATUS
approved

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Last modified May 24 23:50 EDT 2024. Contains 372782 sequences. (Running on oeis4.)