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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A015968 Positive integers n such that n | (15^n + 1). 1
1, 2, 226, 25538, 2885794, 326094722, 36848703586, 4163903505218, 470521096089634, 53168883858128642, 638026606623638426, 6008083875968536546, 6789793858544278594 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

No other terms below 10^19.

Some larger terms: 15878365178317113816706, (15^226+1)/238519527370488646998297200411598927857 (228 digits). - Max Alekseyev, Aug 03 2011

LINKS

Table of n, a(n) for n=1..13.

CROSSREFS

Sequence in context: A270713 A071225 A212082 * A286447 A095220 A113800

Adjacent sequences:  A015965 A015966 A015967 * A015969 A015970 A015971

KEYWORD

nonn,more

AUTHOR

Robert G. Wilson v

EXTENSIONS

a(6)-a(13) from Max Alekseyev, Oct 02 2010, Aug 03 2011, Sep 17 2017

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 June 17 19:10 EDT 2019. Contains 324198 sequences. (Running on oeis4.)