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A200198 Number of -2..2 arrays x(0..n+2) of n+3 elements with zero sum and nonzero second and third differences 1
68, 246, 1042, 3940, 16092, 63326, 256314, 1028100, 4169932, 16889228, 68746558, 279997576, 1143494160, 4675439056, 19150647962, 78534289030, 322481118006, 1325578996662, 5454538071104, 22464846352590, 92602356718092 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 2 of A200204
LINKS
EXAMPLE
Some solutions for n=3
..1....0....1....2....1....1....0....2...-2....0...-2....2...-2...-1....0...-1
.-2....2...-2...-1...-2...-2....1....1....2...-1....0...-2....0....1...-1....2
..1...-2....1....0....2....2....1...-2....2....0...-1...-2...-1...-2...-1....0
..1....0....0...-2....0....1...-1...-2....0....2...-1....1....2....1....1....1
.-1....1....1....1....0...-1....0....0....0...-1....2....1...-1...-1...-1...-1
..0...-1...-1....0...-1...-1...-1....1...-2....0....2....0....2....2....2...-1
CROSSREFS
Sequence in context: A317807 A292344 A189810 * A237745 A237740 A290173
KEYWORD
nonn
AUTHOR
R. H. Hardin Nov 14 2011
STATUS
approved

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Last modified May 22 06:24 EDT 2024. Contains 372743 sequences. (Running on oeis4.)