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A247408 Number of length 4+4 0..n arrays with no disjoint pairs in any consecutive five terms having the same sum. 1
0, 40, 428, 6752, 47592, 225488, 826488, 2696652, 7451396, 19200532, 44634008, 96779936, 196510032, 380589596, 700636600, 1243173684, 2124664616, 3523145424, 5673664032, 8921020564, 13691990956, 20604281544, 30407094956, 44122851304 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Row 4 of A247404.

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..69

EXAMPLE

Some solutions for n=5

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

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

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

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

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

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

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

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

CROSSREFS

Sequence in context: A251129 A007772 A228122 * A285855 A210355 A210348

Adjacent sequences:  A247405 A247406 A247407 * A247409 A247410 A247411

KEYWORD

nonn

AUTHOR

R. H. Hardin, Sep 16 2014

STATUS

approved

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Last modified September 23 18:00 EDT 2021. Contains 347617 sequences. (Running on oeis4.)