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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 0
18, 200, 436, 3916, 24126, 197848, 1559080, 12424332, 95711098, 709795516, 5002719434, 33563203028 (list; graph; refs; listen; history; text; internal format)
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

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Last modified September 22 09:47 EDT 2021. Contains 347606 sequences. (Running on oeis4.)