A258630 Number of length n 1..(7+1) arrays with every leading partial sum divisible by 2, 3, 5 or 7

7, 46, 257, 1408, 8116, 48479, 290231, 1702510, 9898375, 58647747, 356650813, 2191890734, 13394053841, 80981875492, 487503501433, 2957456918572, 18257437602958, 114623886164224, 722845143635980, 4506034402708909

Offset

1,1

Comments

Column 7 of A258631

Links

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

Example

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

Crossrefs

Cf. A258631

Sequence in context: A034471 A100024 A171010 * A264201 A086092 A081894

Adjacent sequences: A258627 A258628 A258629 * A258631 A258632 A258633

Keyword

nonn

Author

R. H. Hardin, Jun 06 2015

Status

approved