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

1,1

Comments

Row 7 of A250419

Links

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

Example

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

Crossrefs

Sequence in context: A072897 A254703 A333110 * A251940 A071231 A233102

Adjacent sequences: A250421 A250422 A250423 * A250425 A250426 A250427

Keyword

nonn

Author

R. H. Hardin, Nov 22 2014

Status

approved