

A062638


Numbers k such that 72^k  71^k is prime.


0




OFFSET

1,1


COMMENTS

Integers corresponding to n greater than 1000 are often only strong pseudoprimes.
a(4) > 10^5.  Robert Price, Mar 20 2014


LINKS

Table of n, a(n) for n=1..3.


PROG

(PARI) is(n)=ispseudoprime(72^n71^n) \\ Charles R Greathouse IV, Jun 13 2017


CROSSREFS

Cf. A000043, A057468, A059801, A059802, A062572A062666.
Sequence in context: A103915 A090823 A093261 * A261238 A197105 A195216
Adjacent sequences: A062635 A062636 A062637 * A062639 A062640 A062641


KEYWORD

nonn,hard,bref


AUTHOR

Mike Oakes, May 18 2001, May 19 2001


EXTENSIONS

a(3) from Robert Price, Mar 20 2014 (computer run by Adam Marciniec)


STATUS

approved



