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A250325 Number of length 6+2 0..n arrays with the sum of second differences squared multiplied by some arrangement of +-1 equal to zero 0
104, 1689, 12820, 57833, 197848, 558541, 1357424, 2953265, 5883028, 10994585, 19364348, 32540881 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 6 of A250320

LINKS

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

EXAMPLE

Some solutions for n=5

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

..4....4....4....3....3....0....3....3....4....1....3....3....3....3....1....3

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

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

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

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

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

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

CROSSREFS

Sequence in context: A200196 A234219 A223420 * A244946 A186931 A273224

Adjacent sequences:  A250322 A250323 A250324 * A250326 A250327 A250328

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 18 2014

STATUS

approved

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Last modified July 25 19:05 EDT 2021. Contains 346291 sequences. (Running on oeis4.)