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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A075983 Primes of the form n^5 + 4^n. 2
5, 307, 33191, 321193, 18889465931478650198741, 401734511064747568885490523085290650630550748445707718725843 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Charles R Greathouse IV, Table of n, a(n) for n = 1..7

MATHEMATICA

Select[Table[n^5+4^n, {n, 500}], PrimeQ] (* Harvey P. Dale, Mar 31 2012 *)

PROG

(PARI) k=0; for(n=1, 20, k=k+1; while(!isprime(k^5+4^k), k++); print1(k^5+4^k", "))

CROSSREFS

Sequence in context: A300687 A300610 A301352 * A160071 A094161 A130308

Adjacent sequences:  A075980 A075981 A075982 * A075984 A075985 A075986

KEYWORD

nonn

AUTHOR

Zak Seidov, Oct 17 2002

EXTENSIONS

Next term has 193 digits.

More terms from Ralf Stephan, Mar 30 2003

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 April 21 07:53 EDT 2019. Contains 322327 sequences. (Running on oeis4.)