Primes p such that lcm(1,2,3,...,p-2,p-1,p) + 1 is prime.

Terms

a(0) =2a(1) =3a(2) =5a(3) =7a(4) =19a(5) =31a(6) =47a(7) =89a(8) =127a(9) =139a(10) =2251a(11) =3271a(12) =4253a(13) =4373a(14) =4549a(15) =5449a(16) =13331a(17) =37123a(18) =55291