A156150 Primes p such that p+2 = 0 (mod pi(p)) and pi(p)=A000720(p) is prime.

31, 353, 9559783, 9559903

Offset

1,1

Comments

A subsequence of A156151.

Links

Table of n, a(n) for n=1..4.

Formula

a(n) = A000040(A156149(n))

Prog

(PARI) p=c=0; until(0, until( isprime(c++), p=nextprime(p+1)); (p+2)%c & next; print1( p", "))

Crossrefs

Cf. A156153.

Sequence in context: A197644 A295211 A261759 * A125419 A138440 A307008

Adjacent sequences: A156147 A156148 A156149 * A156151 A156152 A156153

Keyword

hard,more,nonn

Author

M. F. Hasler, Feb 04 2009

Status

approved