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!)
A105050 a(0)=2, a(n) is the smallest prime of the form a(n-1)*k^2+1. 0
2, 3, 13, 53, 30529, 122117, 17584849, 70339397, 22789964629, 11030342880437, 9927308592393301, 91490075987496662017, 23421459452799145476353, 918214896387537699254943013, 528891780319221714770847175489 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

LINKS

Table of n, a(n) for n=0..14.

EXAMPLE

a(5)=30529=53*24^2+1 is the smallest prime of the form 53k^2+1

CROSSREFS

Sequence in context: A203985 A164511 A184256 * A184179 A100102 A208202

Adjacent sequences:  A105047 A105048 A105049 * A105051 A105052 A105053

KEYWORD

nonn

AUTHOR

John L. Drost, Apr 04 2005

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 1 09:53 EDT 2020. Contains 334762 sequences. (Running on oeis4.)