A248447 Number of length n+5 0..7 arrays with no three disjoint pairs in any consecutive six terms having the same sum.

243576, 1824272, 13682340, 102662460, 770455736, 5782408256, 43396532796, 325686928754, 2444257395164, 18344026931670, 137671221128732, 1033218014524332, 7754266211622294, 58195502512060292, 436755251122710050

Offset

1,1

Comments

Column 7 of A248448.

Links

R. H. Hardin, Table of n, a(n) for n = 1..210

Example

Some solutions for n=1
..2....2....0....4....0....2....2....4....6....4....0....2....4....0....4....0
..2....4....0....4....0....7....6....5....0....0....7....0....4....7....2....4
..6....6....7....4....4....0....7....5....5....6....4....6....2....6....4....4
..5....1....0....7....7....5....0....4....2....2....3....2....4....3....6....5
..3....0....7....7....5....0....2....5....0....7....4....0....5....4....4....5
..1....3....1....1....5....0....1....3....7....3....6....2....0....3....7....5

Crossrefs

Cf. A248448.

Sequence in context: A066082 A204950 A244545 * A187534 A140792 A083623

Adjacent sequences: A248444 A248445 A248446 * A248448 A248449 A248450

Keyword

nonn

Author

R. H. Hardin, Oct 06 2014

Status

approved