

A064936


Primes p such that gcd(p, prime(p)^2  1) does not equal 1.


0




OFFSET

1,1


COMMENTS

No further terms up to 41161739.  Harvey P. Dale, Dec 23 2011


LINKS

Table of n, a(n) for n=1..6.


EXAMPLE

5 belongs in the sequence because gcd(5, P_5^2 1) = gcd(5, 120) = 5.


MATHEMATICA

Do[ If[ GCD[ Prime[n], Prime[ Prime[n]]^2  1] != 1, Print[ Prime[n]] ], {n, 1, 10^6} ]


CROSSREFS

Cf. A064830.
Sequence in context: A325505 A319609 A140551 * A041655 A082520 A062597
Adjacent sequences: A064933 A064934 A064935 * A064937 A064938 A064939


KEYWORD

nonn,more


AUTHOR

Robert G. Wilson v, Oct 26 2001


STATUS

approved



