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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A062538 Primes of form 4*n! + 1. 0
5, 97, 20161, 161281, 1451521, 24908083201, 83691159552001, 1219553378446855442006016000001, 923374789356965521888370970732110324333114258287231764529152000000000001 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..9.

EXAMPLE

4*4! + 1 = 97, a prime.

MATHEMATICA

lst={}; Do[p=4*n!+1; If[PrimeQ[p], AppendTo[lst, p]], {n, 0, 5!}]; lst (* Vladimir Joseph Stephan Orlovsky, Jan 28 2009 *)

PROG

(PARI) for(n=1, 55, if(isprime(4*n!+1), print(4*n!+1)))

CROSSREFS

Sequence in context: A117341 A295190 A202516 * A053980 A215299 A088995

Adjacent sequences:  A062535 A062536 A062537 * A062539 A062540 A062541

KEYWORD

nonn

AUTHOR

Jason Earls, Jul 10 2001

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 22:17 EDT 2019. Contains 324200 sequences. (Running on oeis4.)