a(n) = p, the lesser of twin primes (p, q=p+2) such that p*q - p - q is prime.

Terms

a(0) =3a(1) =5a(2) =29a(3) =71a(4) =107a(5) =191a(6) =239a(7) =569a(8) =881a(9) =1091a(10) =1289a(11) =1619a(12) =1721a(13) =1931a(14) =1997a(15) =2081a(16) =2087a(17) =2129a(18) =2309a(19) =2381a(20) =2549a(21) =2591a(22) =2729a(23) =3299a(24) =3359a(25) =3527a(26) =3851a(27) =4229a(28) =4241a(29) =4271