login
This site is supported by donations to The OEIS Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A116548 a(n) = smallest divisor d of n that occurs earlier in the sequence fewer than a(d) times. 2
1, 2, 3, 2, 5, 3, 7, 4, 3, 5, 11, 4, 13, 7, 5, 8, 17, 6, 19, 5, 7, 11, 23, 6, 5, 13, 9, 7, 29, 6, 31, 8, 11, 17, 7, 9, 37, 19, 13, 8, 41, 7, 43, 11, 9, 23, 47, 8, 7, 10, 17, 13, 53, 18, 11, 14, 19, 29, 59, 10, 61, 31, 21, 16, 13, 11, 67, 17, 23, 10, 71, 12, 73, 37, 15, 19, 11, 13, 79, 10 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

When n is prime, no smaller divisor is available, so a(n) = n. It can be shown than a(n) < n if n is composite. Similar to Golomb's sequence (A001462), but with the added condition that a(n) divides n.

LINKS

Table of n, a(n) for n=1..80.

CROSSREFS

Cf. A095163, A001462.

Sequence in context: A072505 A095163 A033677 * A117818 A073890 A079311

Adjacent sequences:  A116545 A116546 A116547 * A116549 A116550 A116551

KEYWORD

nonn

AUTHOR

Franklin T. Adams-Watters, Mar 16 2006

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 October 15 01:40 EDT 2019. Contains 328025 sequences. (Running on oeis4.)