login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A104067 Primes of the form 2^k + 13. 6
17, 29, 269, 1048589, 274877906957, 18446744073709551629, 1208925819614629174706189, 7957171782556586274486115970349133441607298412757563479047423630290551952200534008528909 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..8.

FORMULA

a(n) = 2^A102634(n) + 13. - R. J. Mathar, Feb 22 2009

MATHEMATICA

a = Delete[Union[Flatten[Table[If [PrimeQ[2^n + 13] == True, 2^n + 13, 0], {n, 1, 400}]]], 1]

PROG

(MAGMA) [ a: n in [0..350] | IsPrime(a) where a is 2^n+13 ] // Vincenzo Librandi, Nov 16 2010

CROSSREFS

Sequence in context: A146870 A146744 A103304 * A274023 A146872 A146792

Adjacent sequences:  A104064 A104065 A104066 * A104068 A104069 A104070

KEYWORD

nonn

AUTHOR

Roger L. Bagula, Mar 02 2005

EXTENSIONS

Definition corrected by Edwin Dyke (ed.dyke(AT)btinternet.com), Feb 19 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 | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified June 26 12:30 EDT 2022. Contains 354883 sequences. (Running on oeis4.)