A188209 Number of nondecreasing arrangements of n numbers in -(n+5)..(n+5) with sum zero.

1, 8, 41, 241, 1394, 8196, 48417, 288100, 1724882, 10388788, 62914457, 382957903, 2342043630, 14385595262, 88716792134, 549159544833, 3411043554787, 21255166581480, 132841213701954, 832537685724170, 5231154448179004

Offset: 1

Author

R. H. Hardin Mar 24 2011

Keywords

• nonn

Comments

Column 7 of A188211

Examples

			Some solutions for n=3
.-5...-4...-8...-1...-5...-8...-4...-7...-4...-8...-7...-5...-7...-3...-5...-3
..0...-3....2...-1...-3....1....0....0....2....0....3....1...-1...-1...-2....0
..5....7....6....2....8....7....4....7....2....8....4....4....8....4....7....3
		

Links

• R. H. Hardin, Table of n, a(n) for n = 1..26