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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A058015 Numbers n such that 2^n + n^3 is prime. 1
1, 5, 35, 821, 1079, 1301, 3539 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

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

MATHEMATICA

Select[Range[0, 5000], PrimeQ[(2^# + #^3)] &] (* Vincenzo Librandi, Sep 29 2012 *)

PROG

(PARI) is(n)=ispseudoprime(2^n+n^3) \\ Charles R Greathouse IV, Jun 12 2017

CROSSREFS

Cf. A000040.

Sequence in context: A260075 A317816 A034236 * A053420 A321605 A001802

Adjacent sequences:  A058012 A058013 A058014 * A058016 A058017 A058018

KEYWORD

nonn

AUTHOR

Harrison Brown (nanb(AT)mindspring.com), Nov 14 2000

EXTENSIONS

Two more terms from Erich Friedman, Jun 15 2001

a(7) from Vincenzo Librandi, Sep 29 2012

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 16 10:03 EDT 2019. Contains 324152 sequences. (Running on oeis4.)