A254834 Number of length 7 1..(n+1) arrays with every leading partial sum divisible by 2, 3 or 5.

10, 141, 1262, 5316, 31005, 69858, 207232, 455349, 1064100, 1766942, 3855379, 5917097, 10665539, 17086474, 28487211, 39458933, 66274569, 88286570, 135372973, 187704485, 269256161, 341006752, 499566860, 652466750, 884037304, 1129942612

Offset

1,1

Comments

Row 7 of A254827.

Links

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

Example

Some solutions for n=4
..2....3....2....5....3....5....5....2....2....4....2....2....2....4....5....3
..4....3....2....5....1....1....3....3....1....5....1....3....2....1....5....5
..4....2....4....2....4....3....2....5....1....3....1....3....4....4....5....4
..2....4....1....4....4....3....2....5....5....3....1....4....1....3....3....4
..3....4....5....4....4....4....2....5....5....3....5....3....5....2....4....5
..5....2....1....2....4....4....1....4....4....2....2....5....4....1....4....3
..1....4....5....3....4....1....3....3....4....2....2....2....3....1....1....4

Crossrefs

Cf. A254827.

Sequence in context: A051618 A295034 A221576 * A093470 A093471 A324448

Adjacent sequences: A254831 A254832 A254833 * A254835 A254836 A254837

Keyword

nonn

Author

R. H. Hardin, Feb 08 2015

Status

approved