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A200077 Number of 0..3 arrays x(0..n) of n+1 elements with zero n-1st differences 0
1, 4, 6, 8, 14, 18, 24, 56, 26, 26, 54, 226, 260, 482, 196, 54, 128, 728, 1226, 4106, 1168, 272, 892, 4798, 1390, 1298, 962, 216, 470, 2104 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Column 3 of A200082

LINKS

Table of n, a(n) for n=1..30.

EXAMPLE

Some solutions for n=6

..3....1....3....1....2....1....0....2....3....2....0....0....2....1....3....2

..1....2....2....2....3....0....1....1....3....1....0....2....0....3....3....2

..1....1....1....3....2....1....2....0....3....2....0....2....0....3....1....2

..2....0....1....3....1....2....2....0....3....3....0....1....1....2....0....2

..3....0....2....2....1....2....1....1....3....3....0....0....2....1....1....2

..3....1....3....1....2....1....0....2....3....2....0....0....2....1....3....2

..1....2....2....2....3....0....1....1....3....1....0....2....0....3....3....2

CROSSREFS

Sequence in context: A320125 A110974 A173180 * A256137 A116897 A293763

Adjacent sequences:  A200074 A200075 A200076 * A200078 A200079 A200080

KEYWORD

nonn

AUTHOR

R. H. Hardin Nov 13 2011

STATUS

approved

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Last modified December 7 05:14 EST 2019. Contains 329839 sequences. (Running on oeis4.)