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A156153 Primes p such that p == 2 (mod pi(p)) and pi(p) is prime. 3
5, 41, 367, 9559817, 514275529 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

FORMULA

a(n) = A000040(A156154(n)) = A000040(A000040(A156155(n)))

PROG

(PARI) p=c=0; until(0, until( isprime(c++),

CROSSREFS

Cf. A156152.

Sequence in context: A155612 A145215 A083884 * A026000 A058475 A199684

Adjacent sequences:  A156150 A156151 A156152 * A156154 A156155 A156156

KEYWORD

hard,more,nonn

AUTHOR

M. F. Hasler (www.univ-ag.fr/~mhasler), Feb 04 2009

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Last modified February 13 14:55 EST 2012. Contains 205519 sequences.