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A190074 Number of arrangements of 5 nonzero numbers x(i) in -n..n with the sum of div(x(i),x(i+1)), where div(a,b)=a/b produces the integer quotient implying a nonnegative remainder, equal to zero 1
12, 144, 922, 3481, 9904, 23400, 48491, 92478, 162599, 270267, 430274, 655974, 965098, 1390174, 1947527, 2667906, 3590889, 4753865, 6198717, 7979654, 10128692, 12732119, 15867500, 19571053, 23904927, 29021539, 34967650, 41839570, 49768153 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 4 of A190071

LINKS

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

EXAMPLE

Some solutions for n=4

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

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

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

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

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

CROSSREFS

Sequence in context: A188609 A206873 A188846 * A188853 A188503 A206879

Adjacent sequences:  A190071 A190072 A190073 * A190075 A190076 A190077

KEYWORD

nonn

AUTHOR

R. H. Hardin May 04 2011

STATUS

approved

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Last modified September 21 19:40 EDT 2021. Contains 347598 sequences. (Running on oeis4.)