A258637 Number of length 6 1..(n+1) arrays with every leading partial sum divisible by 2, 3, 5 or 7.

27, 181, 834, 2506, 9099, 20462, 48479, 93595, 186047, 290231, 547112, 796644, 1331817, 2015891, 3105402, 4138454, 6378171, 8209966, 11853247, 15922388, 21715915, 26819170, 36820418, 47145913, 61470774, 76964731, 98287277

Offset

1,1

Comments

Row 6 of A258631

Links

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

Example

Some solutions for n=8
..7....7....8....7....2....7....6....2....3....3....2....8....7....5....4....2
..7....8....7....7....5....3....6....3....4....3....2....8....1....3....1....7
..1....9....7....6....9....2....6....1....2....1....6....8....8....2....5....7
..6....6....5....4....6....2....3....6....7....2....8....2....9....8....8....5
..6....6....6....6....6....8....7....6....8....1....2....4....8....4....6....9
..8....2....7....8....2....6....7....3....1....6....8....2....6....3....3....8

Crossrefs

Cf. A258631

Sequence in context: A125337 A126495 A224454 * A228463 A000499 A365890

Adjacent sequences: A258634 A258635 A258636 * A258638 A258639 A258640

Keyword

nonn

Author

R. H. Hardin, Jun 06 2015

Status

approved