A250317 Number of length n+2 0..5 arrays with the sum of second differences squared multiplied by some arrangement of +-1 equal to zero

18, 200, 436, 3916, 24126, 197848, 1559080, 12424332, 95711098, 709795516, 5002719434, 33563203028

Offset

1,1

Comments

Column 5 of A250320

Links

Table of n, a(n) for n=1..12.

Example

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

Crossrefs

Sequence in context: A177358 A026881 A181961 * A250558 A282833 A181400

Adjacent sequences: A250314 A250315 A250316 * A250318 A250319 A250320

Keyword

nonn

Author

R. H. Hardin, Nov 18 2014

Status

approved