A200178 Number of -5..5 arrays x(0..n-1) of n elements with zero sum and no two consecutive declines, no adjacent equal elements, and no element more than one greater than the previous (random base sawtooth pattern)

1, 5, 7, 19, 31, 72, 186, 460, 891, 1934, 5241, 12431, 25680, 59390, 152436, 359303, 789835, 1853143, 4609254, 10926157, 24817557, 58735668, 144083442, 342433339, 794002110, 1892015431, 4599853709, 10962118986, 25773744159, 61646299147

Offset

1,2

Comments

Column 5 of A200181

Links

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

Example

Some solutions for n=6
..5....4....3....1....4....5....3....1....2....0....3....5....3....2...-1....1
..2....1....2....0...-1...-1...-2...-1....0....1....4...-2....0...-1....0...-1
..3....2....3....1....0....0...-1....0....1....0....5...-1....1....0....1....0
.-3...-2...-3...-1...-1...-1....0...-1....0....1...-4....0...-1....1....0....1
.-2...-1...-2....0....0....0....1....0....1....2...-3....1....0....2....1...-1
.-5...-4...-3...-1...-2...-3...-1....1...-4...-4...-5...-3...-3...-4...-1....0

Crossrefs

Sequence in context: A022889 A001562 A163386 * A064101 A018581 A146470

Adjacent sequences: A200175 A200176 A200177 * A200179 A200180 A200181

Keyword

nonn

Author

R. H. Hardin Nov 13 2011

Status

approved