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