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A189952 1/4 the number of arrangements of 3 nonzero numbers x(i) in -n..n with the sum of sign(x(i))*(|x(i)| mod x(i+1)) equal to zero 2
2, 8, 15, 29, 39, 61, 75, 103, 124, 155, 176, 225, 250, 289, 325, 381, 413, 475, 512, 578, 626, 688, 730, 826, 877, 947, 1009, 1095, 1150, 1255, 1317, 1419, 1489, 1578, 1650, 1789, 1862, 1959, 2040, 2176, 2254, 2391, 2476, 2601, 2708, 2831, 2918, 3098, 3197 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 2 of A189951

LINKS

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

EXAMPLE

Some solutions with n=3

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

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

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

CROSSREFS

Sequence in context: A318272 A244476 A292202 * A077598 A095298 A297734

Adjacent sequences:  A189949 A189950 A189951 * A189953 A189954 A189955

KEYWORD

nonn

AUTHOR

R. H. Hardin May 02 2011

STATUS

approved

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Last modified July 30 02:32 EDT 2021. Contains 346346 sequences. (Running on oeis4.)