A250424 - OEIS

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

(list; graph; refs; listen; history; text; internal format)

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