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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A164326 a(n) is the smallest number m such that (2k-1)m-1 is prime for all 0<k<n+1. 1
3, 4, 4, 6, 6, 2100, 2100, 105828450, 3533468190, 240544635660 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..10.

CROSSREFS

Cf. A071576, A164325.

Sequence in context: A120613 A277193 A240728 * A117571 A008474 A111611

Adjacent sequences:  A164323 A164324 A164325 * A164327 A164328 A164329

KEYWORD

more,nonn

AUTHOR

Farideh Firoozbakht, Sep 16 2009

EXTENSIONS

a(10)=240544635660 from Zak Seidov, Sep 21 2009

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 | More pages
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy .

Last modified March 29 03:29 EDT 2017. Contains 284250 sequences.