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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A063106 Primes of form !n + 2n - 1. 1
2, 5, 17, 43, 887, 522956339, 20935051082417771847631371547939998232420940393 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..7.

PROG

(PARI) for(n=1, 50, x=sum(k=0, n-1, k!)+(2*n-1); if(isprime(x), print(x)))

CROSSREFS

Cf. A003422.

Sequence in context: A076076 A136194 A056304 * A096295 A215580 A275210

Adjacent sequences:  A063103 A063104 A063105 * A063107 A063108 A063109

KEYWORD

nonn

AUTHOR

Jason Earls, Aug 08 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 October 16 15:31 EDT 2019. Contains 328101 sequences. (Running on oeis4.)