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A258626 Number of length n 1..(3+1) arrays with every leading partial sum divisible by 2, 3, 5 or 7 1
3, 12, 45, 130, 331, 834, 2115, 5726, 16873, 50003, 142116, 400694, 1157686, 3355089, 9458656, 26092189, 72995360, 213171551, 647222852, 1987679608, 6016219942, 17773719595, 51564943489, 148469880307, 426108755766, 1217647287273 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 3 of A258631

LINKS

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

EXAMPLE

Some solutions for n=8

..2....3....4....2....2....2....3....3....3....2....2....4....3....3....2....2

..2....3....2....1....2....1....4....2....1....1....2....2....3....1....1....3

..3....1....4....2....2....3....3....3....2....4....1....1....1....4....1....2

..1....1....4....2....2....2....2....4....2....3....4....1....3....4....2....1

..1....1....4....2....4....2....3....2....4....4....3....2....4....2....2....1

..1....3....2....1....3....2....1....1....2....4....3....2....2....2....4....3

..4....2....1....2....3....3....2....1....1....3....3....4....2....2....4....4

..4....2....4....2....4....3....2....4....1....1....2....4....3....2....4....2

CROSSREFS

Cf. A258631

Sequence in context: A339066 A260146 A229936 * A064017 A005320 A062561

Adjacent sequences:  A258623 A258624 A258625 * A258627 A258628 A258629

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jun 06 2015

STATUS

approved

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Last modified August 1 14:14 EDT 2021. Contains 346391 sequences. (Running on oeis4.)