login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A247148 Primes p that divide LS(p), where LS is the "Look and Say" function (A045918). 0
2, 5, 108947, 4940867 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
a(5) > 4*10^12. - Tyler Busby, Feb 02 2023
LINKS
Chris K. Caldwell and G. L. Honaker, Prime Curio for 108947
EXAMPLE
a(2)=5, because 5 is prime and divides LS(5) or 15.
CROSSREFS
Sequence in context: A090071 A319898 A325957 * A139062 A241861 A340984
KEYWORD
nonn,more,hard,base
AUTHOR
G. L. Honaker, Jr., Nov 20 2014
EXTENSIONS
a(4) from Alois P. Heinz, Nov 20 2014
STATUS
approved

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

License Agreements, Terms of Use, Privacy Policy. .

Last modified April 18 22:18 EDT 2024. Contains 371782 sequences. (Running on oeis4.)