A189496 Number of arrangements of n+1 nonzero numbers x(i) in -7..7 with the sum of floor(x(i)/x(i+1)) equal to zero

42, 380, 3850, 45892, 567774, 7269852, 93830584, 1218634086, 15936391068, 209537582772, 2767610804790, 36693616556076, 488053206844182, 6509219419657784, 87019925011505106, 1165759230193567534

Offset

1,1

Comments

Column 7 of A189498

Links

R. H. Hardin, Table of n, a(n) for n = 1..85

Example

Some solutions for n=5
..4...-3....4....6....4....5...-4...-5....7....4....5...-3....2....3...-4...-6
.-7...-7....2...-6....2...-6...-6...-6...-6...-6...-6...-6...-6...-7...-6...-6
..4...-2....4...-6...-4...-3....5...-3...-3...-6....7...-2....3...-4...-7...-2
..2...-4....4....5...-5...-4....3...-5....5...-3....5....3....1...-4...-5....3
..7....7...-2....5...-5...-6....5....5....5...-7....2...-4....1....3....5....6
..7...-6....2....5....4....7....3...-6....7....5...-4....5...-7....3....6...-2

Crossrefs

Sequence in context: A190069 A105919 A091082 * A064302 A231705 A224455

Adjacent sequences: A189493 A189494 A189495 * A189497 A189498 A189499

Keyword

nonn

Author

R. H. Hardin Apr 23 2011

Status

approved