A247410 Number of length 6+4 0..n arrays with no disjoint pairs in any consecutive five terms having the same sum

0, 40, 640, 31240, 369064, 2663568, 13824356, 63763868, 232965764, 789482908, 2323255280, 6264786636, 15496300072, 36144135592, 78828891640, 164177767820, 325548517308, 621195929260, 1141077450804, 2033567292132, 3511416120272

Offset

1,2

Comments

Row 6 of A247404

Links

R. H. Hardin, Table of n, a(n) for n = 1..60

Example

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

Crossrefs

Sequence in context: A057808 A269778 A229696 * A183464 A359932 A189286

Adjacent sequences: A247407 A247408 A247409 * A247411 A247412 A247413

Keyword

nonn

Author

R. H. Hardin, Sep 16 2014

Status

approved