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A189499
Number of arrangements of 3 nonzero numbers x(i) in -n..n with the sum of floor(x(i)/x(i+1)) equal to zero
1
4, 12, 38, 78, 148, 240, 380, 554, 788, 1062, 1410, 1806, 2294, 2844, 3498, 4226, 5068, 5988, 7040, 8180, 9466, 10850, 12396, 14046, 15876, 17824, 19960, 22226, 24696, 27296, 30118, 33090, 36288, 39642, 43242, 47002, 51022, 55220, 59690, 64346, 69294
OFFSET
1,1
COMMENTS
Row 2 of A189498
LINKS
EXAMPLE
Some solutions for n=5
..4...-1....3...-4....1...-1...-3....2....4....5....3...-5....4....3....1...-3
.-5....5...-5...-3....2...-4....5....2....3....4...-5...-3...-5....3...-5....4
.-5....3...-3....3....5...-5....5...-5...-3...-4...-4....4...-4...-4...-4....4
CROSSREFS
Sequence in context: A149322 A149323 A024590 * A183159 A369682 A289809
KEYWORD
nonn
AUTHOR
R. H. Hardin Apr 23 2011
STATUS
approved