

A258624


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


1



1, 2, 4, 8, 16, 27, 33, 35, 45, 60, 68, 80, 106, 142, 211, 343, 504, 637, 790, 1130, 1763, 2609, 3568, 4642, 5797, 7056, 8768, 11568, 16417, 24675, 37552, 56272, 83937, 125305, 182162, 252228, 339708, 467272, 669375, 968670, 1362912, 1838792
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OFFSET

1,2


COMMENTS

Column 1 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....2....2....2....2....2....2....2....2....2....2....2....2
..1....2....1....2....1....1....1....2....1....2....1....1....2....2....1....2
..2....2....2....1....1....2....1....1....1....1....1....2....2....2....2....2
..1....1....1....2....1....2....1....1....2....1....1....2....1....2....1....2
..1....1....2....1....2....2....2....2....2....1....1....1....2....1....1....2
..1....2....2....1....1....1....2....1....2....2....2....1....1....1....2....2
..2....2....2....1....1....2....1....1....2....1....2....1....2....2....1....2
..2....2....2....2....1....2....2....2....2....2....2....2....2....2....2....1


CROSSREFS

Cf. A258631
Sequence in context: A322326 A018826 A342130 * A236292 A280783 A104899
Adjacent sequences: A258621 A258622 A258623 * A258625 A258626 A258627


KEYWORD

nonn


AUTHOR

R. H. Hardin, Jun 06 2015


STATUS

approved



