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A199948 Number of -n..n arrays x(0..6) of 7 elements with zeroth through 6th differences all nonzero 0
2, 2490, 63260, 672866, 3879760, 16261206, 52799912, 146068736, 354811296, 782544732, 1588743870, 3033145320, 5471502126, 9441265238, 15658407444, 25110211642 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 7 of A199943

LINKS

Table of n, a(n) for n=1..16.

EXAMPLE

Some solutions for n=6

.-2....2....2....1...-3....1...-1....3....6...-4....3...-4....3....3...-5...-4

..1....1...-6....4...-6...-3....1....4...-3...-3....1...-6...-3...-6....1....1

.-6....4....4...-6...-3...-6....4...-6...-6...-6...-3....4...-6...-3....4...-3

..1...-3...-6....1...-6....1...-3....1....4....1...-6...-3...-3....4....1....1

.-5...-5...-1....6....4...-3....3...-5...-3...-2....4....4...-6....2....5...-1

..6...-4....6....1....1...-4...-6...-2...-2...-3...-1....3....4....5...-3....1

..1....1....1...-6...-3...-3....4....4....4...-6...-3...-3...-6....4...-6...-3

CROSSREFS

Sequence in context: A276650 A135234 A274962 * A261382 A281692 A225221

Adjacent sequences:  A199945 A199946 A199947 * A199949 A199950 A199951

KEYWORD

nonn

AUTHOR

R. H. Hardin Nov 12 2011

STATUS

approved

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Last modified September 16 11:05 EDT 2019. Contains 327095 sequences. (Running on oeis4.)