login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
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 (list; graph; refs; listen; history; text; internal format)
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

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified September 28 15:59 EDT 2021. Contains 347716 sequences. (Running on oeis4.)