A189502 Number of arrangements of 6 nonzero numbers x(i) in -n..n with the sum of floor(x(i)/x(i+1)) equal to zero.

0, 550, 4920, 24806, 85480, 238836, 567774, 1218778, 2397016, 4388664, 7630748, 12628448, 20067182, 30962660, 46263140, 67394664, 96114728, 134386478, 184598554, 249470222, 331776594, 436360316, 567697448, 729535354, 926393324

Offset: 1

Author

R. H. Hardin Apr 23 2011

Keywords

• nonn

Comments

Row 5 of A189498

Examples

			Some solutions for n=5
..1....4...-1...-1....1....4....1....3....1...-2...-3....5...-1....5....1....3
.-2....5...-5...-3....5....1...-1...-2...-1...-1...-3...-5...-3...-5...-5...-2
.-2....3....5....2....5...-3...-4...-3....4....1....5...-4...-4...-2...-3....3
.-1...-3....5....2...-4...-3...-3...-2....1...-5...-5....3...-5...-5...-2....1
..2...-3....3...-2...-2....1...-3...-1....5...-5....3....1...-3....4....4...-5
.-2....5...-4...-1....5...-3....5....4...-4....5....1...-5....5....3....5...-5
		

Links

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