OFFSET
1,1
LINKS
Henri Lifchitz and Renaud Lifchitz, Search for 2^n-15, PRP Top Records.
EXAMPLE
100 is present because 2^100 - 15 is prime.
MAPLE
A059612:=n->if isprime(2^n-15) then n; fi; seq(A059612(n), n=1..20000); # Wesley Ivan Hurt, Dec 06 2013
MATHEMATICA
Select[Range[4, 20000], PrimeQ[2^#-15]&] (* Vladimir Joseph Stephan Orlovsky, Feb 27 2011 *)
PROG
(PARI) is(n)=isprime(2^n-15) \\ Charles R Greathouse IV, Feb 17 2017
CROSSREFS
KEYWORD
nonn
AUTHOR
Andrey V. Kulsha, Feb 13 2001
EXTENSIONS
a(26) from Labos Elemer, Jul 09 2004
a(27)-a(29) from Max Alekseyev, a(30) from Henri Lifchitz, a(31)-a(32) from Gary Barnes, a(33)-a(35) from Lelio R Paula, added by Max Alekseyev, Feb 09 2012
a(36)-a(37) from Lelio R Paula, added by Max Alekseyev, Oct 24 2013
a(38) from Lelio R Paula, added by Robert Price, Dec 06 2013
a(39) from Lelio R Paula, added by Robert Price, Mar 16 2019
a(40)-a(43) from Stefano Morozzi, added by Elmo R. Oliveira, Nov 16 2023
STATUS
approved