A250424 Number of length 7+1 0..n arrays with the sum of the minimum of each adjacent pair multiplied by some arrangement of +-1 equal to zero.

136, 3069, 29221, 169352, 713260, 2399000, 6847916, 17247435, 39349946, 82830804, 163171880, 303974701, 539955055, 920393391, 1513595984, 2411810686, 3737466811, 5649538780, 8351938843, 12101749148, 17220184737, 24102352508

Offset: 1

Author

R. H. Hardin, Nov 22 2014

Keywords

• nonn

Comments

Row 7 of A250419

Examples

			Some solutions for n=4
..0....3....3....4....2....3....2....1....0....1....3....0....2....1....3....4
..0....1....1....0....2....1....2....0....0....0....0....1....2....1....1....0
..3....3....2....2....3....1....1....1....2....2....3....4....0....1....3....2
..0....2....2....0....0....1....3....4....2....3....1....0....4....4....0....2
..0....0....0....4....1....0....1....1....2....4....2....1....4....2....1....4
..2....4....1....4....3....0....4....1....1....4....2....0....1....0....2....2
..0....3....0....3....4....1....4....3....4....3....0....1....3....4....4....2
..1....1....1....1....2....4....0....2....2....2....0....1....2....3....1....0
		

Links

• R. H. Hardin, Table of n, a(n) for n = 1..34