

A064713


Prime(n)^2  n is a prime.


1



1, 2, 6, 8, 20, 30, 42, 48, 50, 60, 68, 96, 110, 122, 132, 168, 204, 222, 234, 284, 306, 332, 336, 366, 378, 392, 398, 402, 420, 440, 474, 488, 492, 506, 516, 518, 530, 572, 594, 600, 650, 672, 680, 740, 756, 762, 770, 810, 870, 884, 888, 902, 920, 930, 938
(list;
graph;
refs;
listen;
history;
text;
internal format)



OFFSET

1,2


LINKS

Harry J. Smith, Table of n, a(n) for n=1,...,1000


EXAMPLE

6 is in the sequence because Prime(6)^2  6 = 169  6 = 163 is a prime.


MATHEMATICA

Select[Range[1000], PrimeQ[Prime[#]^2#]&] (* Harvey P. Dale, May 17 2013 *)


PROG

(PARI) { n=0; for (m=1, 10^9, if (isprime(prime(m)^2  m), write("b064713.txt", n++, " ", m); if (n==1000, break)) ) } [From Harry J. Smith, Sep 23 2009]


CROSSREFS

Cf. A064361.
Sequence in context: A069553 A143481 A093968 * A162213 A100358 A134136
Adjacent sequences: A064710 A064711 A064712 * A064714 A064715 A064716


KEYWORD

easy,nonn


AUTHOR

Robert G. Wilson v, Oct 13 2001


STATUS

approved



