A248488 Number of length n+5 0..7 arrays with some three disjoint pairs in each consecutive six terms having the same sum.

18568, 24208, 33520, 48808, 73868, 114924, 182304, 300546, 498444, 827778, 1373266, 2273612, 3756406, 6341934, 10665140, 17860452, 29785700, 49476904, 81918892, 138414790, 232833920, 389934374, 650254010, 1080005728, 1788097360

Offset

1,1

Comments

Column 7 of A248489.

Links

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

Example

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

Crossrefs

Cf. A248489.

Sequence in context: A236816 A229076 A157740 * A237700 A248065 A283934

Adjacent sequences: A248485 A248486 A248487 * A248489 A248490 A248491

Keyword

nonn

Author

R. H. Hardin, Oct 07 2014

Status

approved