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A200080 Number of 0..6 arrays x(0..n) of n+1 elements with zero n-1st differences 0
1, 7, 17, 43, 111, 245, 429, 855, 1863, 3573, 10241, 30645, 50043, 160499, 149009, 149121, 755895, 3366835 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Column 6 of A200082

LINKS

Table of n, a(n) for n=1..18.

EXAMPLE

Some solutions for n=6

..0....4....3....3....5....5....0....5....5....5....5....6....5....0....2....0

..3....5....0....1....5....0....0....5....1....0....3....0....5....1....1....3

..5....3....0....1....2....3....2....3....4....0....4....1....4....0....0....4

..6....2....1....2....1....5....4....2....6....2....4....3....2....0....0....3

..6....3....2....3....3....3....5....3....4....4....2....3....0....2....1....1

..5....4....3....3....5....0....5....5....0....5....0....1....0....5....2....0

..3....0....5....1....0....5....5....5....1....5....3....0....5....6....1....3

CROSSREFS

Sequence in context: A268255 A124965 A253973 * A179030 A179031 A107178

Adjacent sequences:  A200077 A200078 A200079 * A200081 A200082 A200083

KEYWORD

nonn

AUTHOR

R. H. Hardin Nov 13 2011

STATUS

approved

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Last modified January 23 22:16 EST 2020. Contains 331177 sequences. (Running on oeis4.)