A200179 Number of -6..6 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, 6, 7, 26, 48, 103, 246, 700, 1573, 3247, 8034, 21608, 50100, 109071, 268358, 690150, 1629202, 3709231, 9026969, 22707455, 54349757, 126747830, 308139152, 765740522, 1845805544, 4379391584, 10654557350, 26290537792, 63724232354, 152906665554

Offset: 1

Author

R. H. Hardin, Nov 13 2011

Keywords

• nonn
• changed

Comments

Column 6 of A200181.

Examples

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

Links

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

Crossrefs

Cf. A200181.