1,1

Primes of the form A070826(n)+2.

Dario Alpern, Factorization using the Elliptic Curve Method.

a(3)=107 because 107 is a prime of the form primorial(7)/2+2=A070826(4)+2=2*3*5*7/2+2.

Cf. A070826, A096177 primes p such that primorial(p)/2+2 is prime, A096547 primes p such that primorial(p)/2-2 is prime, A067024 smallest p+2 that has n distinct prime factors, A014545 primorial primes, A087398.

Sequence in context: A034821 A098028 A100301 this_sequence A084167 A062586 A067710

Adjacent sequences: A096175 A096176 A096177 this_sequence A096179 A096180 A096181

nonn

Hugo Pfoertner (hugo(AT)pfoertner.org), Jun 27 2004