A248453 Number of length 5+5 0..n arrays with no three disjoint pairs in any consecutive six terms having the same sum

200, 16932, 459276, 5171484, 36721992, 188800400, 770455736, 2638460040, 7890776164, 21155635320, 51868563012, 118031940824, 252166290236, 510352941020, 985594723572, 1826853703668, 3265799868548, 5653339610192

Offset

1,1

Comments

Row 5 of A248448

Links

R. H. Hardin, Table of n, a(n) for n = 1..28

Example

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

Crossrefs

Sequence in context: A221502 A232132 A278191 * A035835 A027825 A098963

Adjacent sequences: A248450 A248451 A248452 * A248454 A248455 A248456

Keyword

nonn

Author

R. H. Hardin, Oct 06 2014

Status

approved