A184057 - OEIS

A184057

Number of strings of n+2 numbers x(i) in -5..5 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

1, 25, 143, 839, 10135, 106047, 1015445, 9974135, 100003019, 1002241579, 9943531087

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,2

COMMENTS

Column 5 of A184061

LINKS

EXAMPLE

Some solutions for n=4

..5...-2...-1...-1....5....5...-4....1....4....5...-1....0...-1...-2....0....1

.-2....3....0....3...-4...-4....3....0....3....4...-2...-5...-2....3....5....5

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

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

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

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

CROSSREFS

KEYWORD

nonn

AUTHOR

STATUS

approved