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A184058
Number of strings of n+2 numbers x(i) in -6..6 with the sum of x(i) equal to zero and the sums of x(i)*x(i+1) and x(i)*x(i+2) equal to each other
0
1, 31, 207, 1531, 21411, 251231, 2880959, 33207359
(list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
Column 6 of A184061
LINKS
Table of n, a(n) for n=1..8.
EXAMPLE
Some solutions for n=4
.-2...-1...-3...-5....5...-2....1....5....5....0...-2...-4....4....0....2....4
..0....0...-2...-5....5....2...-2....2...-2....0...-4....3...-3....5....0...-6
..0....0....4....5...-5...-5....0....6...-2....4....4....2...-2....2....0....4
..2....1....0....0....0....0...-2...-4...-2....0....2....2...-1...-5....0....4
..4....2....2....5...-5....6...-1...-3....2....0...-4....2....3....1...-2...-2
.-4...-2...-1....0....0...-1....4...-6...-1...-4....4...-5...-1...-3....0...-4
CROSSREFS
Sequence in context: A125341 A126499 A297758 * A096906 A181124 A142328
Adjacent sequences: A184055 A184056 A184057 * A184059 A184060 A184061
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 09 2011
STATUS
approved

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Last modified November 16 01:18 EST 2024. Contains 377778 sequences.
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