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A189548 Number of arrangements of 5 nonzero numbers x(i) in -n..n with the sum of trunc(x(i)/x(i+1)) equal to zero 1
12, 152, 964, 3664, 11276, 26152, 56440, 107464, 192680, 320940, 519728, 785056, 1168104, 1680672, 2360220, 3236220, 4391472, 5806664, 7616720, 9805592, 12492388, 15716184, 19660824, 24190984, 29641876, 35992732, 43442168, 51971748 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 4 of A189545

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..200

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Sequence in context: A015611 A127650 A286432 * A103759 A351526 A121195

Adjacent sequences: A189545 A189546 A189547 * A189549 A189550 A189551

KEYWORD

nonn

AUTHOR

R. H. Hardin Apr 23 2011

STATUS

approved

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Last modified November 30 15:21 EST 2022. Contains 358442 sequences. (Running on oeis4.)