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A250324 Number of length 5+2 0..n arrays with the sum of second differences squared multiplied by some arrangement of +-1 equal to zero 0
42, 487, 2432, 8767, 24126, 57305, 119004, 228401, 404196, 680467, 1085778, 1673983, 2485432, 3600959, 5069184, 7002383 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 5 of A250320

LINKS

Table of n, a(n) for n=1..16.

EXAMPLE

Some solutions for n=6

..6....3....5....2....2....4....2....0....3....5....0....1....0....3....2....1

..0....0....6....0....1....4....1....6....2....4....4....4....2....3....2....0

..3....1....5....0....3....2....2....5....2....2....4....4....5....0....5....1

..6....0....5....0....2....3....0....2....1....5....6....6....6....4....4....2

..1....5....5....5....5....6....0....5....4....1....3....4....3....4....0....0

..5....3....2....0....5....0....3....5....2....5....1....4....2....5....0....0

..1....0....1....6....0....2....6....5....3....6....5....3....4....1....0....3

CROSSREFS

Sequence in context: A204566 A249233 A249234 * A086944 A263289 A273223

Adjacent sequences:  A250321 A250322 A250323 * A250325 A250326 A250327

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 18 2014

STATUS

approved

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Last modified August 5 08:27 EDT 2021. Contains 346464 sequences. (Running on oeis4.)