

A084297


Primes p=prime(m) such that pi(m*p)/m is integer.


2



2, 5, 211, 457, 1223, 3943, 130259, 167953, 468473, 721159, 927317, 2026061
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OFFSET

1,1


LINKS

Table of n, a(n) for n=1..12.


FORMULA

a(n) = prime(A084294(n))


MATHEMATICA

Do[s=PrimePi[n*Prime[n]]/n; If[IntegerQ[s], Print[Prime[n]]], {n, 1, 100000}]


CROSSREFS

Cf. A000040, A000720, A057855, A084294, A084298.
Sequence in context: A216458 A027682 A096695 * A041873 A072118 A249180
Adjacent sequences: A084294 A084295 A084296 * A084298 A084299 A084300


KEYWORD

nonn,more


AUTHOR

Labos Elemer, May 27 2003


EXTENSIONS

Name edited by Michel Marcus, Aug 30 2019
a(9)a(12) from Giovanni Resta, Sep 02 2019


STATUS

approved



