A248452 Number of length 4+5 0..n arrays with no three disjoint pairs in any consecutive six terms having the same sum

136, 7116, 133872, 1166348, 6729772, 29135376, 102662460, 309407104, 826209396, 2001072604, 4474375652, 9359308356, 18502642052, 34848697904, 62937664056, 109564592568, 184647595344, 302339038260, 482432513584, 752123193756

Offset

1,1

Comments

Row 4 of A248448

Links

R. H. Hardin, Table of n, a(n) for n = 1..29

Example

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

Crossrefs

Sequence in context: A233102 A249237 A194014 * A035819 A233086 A374308

Adjacent sequences: A248449 A248450 A248451 * A248453 A248454 A248455

Keyword

nonn

Author

R. H. Hardin, Oct 06 2014

Status

approved