A156149 Primes p such that prime(p)+2 = 0 (mod p), where prime(p)=A000040(p) is the p-th prime.

11, 71, 637319, 637327

Offset: 1

Author

M. F. Hasler, Feb 04 2009

Keywords

• hard
• more
• nonn

Comments

The subsequence of primes in A092044.

Crossrefs

Cf. A156154.

Programs

PARI

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

Formula

a(n) = A000720(A156150(n)) = A000040(A156148(n))