A258638 Number of length 7 1..(n+1) arrays with every leading partial sum divisible by 2, 3, 5 or 7

33, 316, 2115, 8432, 40789, 105719, 290231, 615072, 1376125, 2357746, 4980833, 7842482, 14253622, 23019880, 37955879, 53553640, 88436758, 120061819, 183877123, 258843359, 370889319, 477163075, 687457306, 913900212, 1241075611

Offset

1,1

Comments

Row 7 of A258631

Links

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

Example

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

Crossrefs

Cf. A258631

Sequence in context: A241966 A210077 A210070 * A081932 A121994 A093743

Adjacent sequences: A258635 A258636 A258637 * A258639 A258640 A258641

Keyword

nonn

Author

R. H. Hardin, Jun 06 2015

Status

approved