a(n) = smallest palindrome > a(n-1) such that a(1)*a(2)*...*a(n) - 1 is a prime.

Terms

a(0) =3a(1) =4a(2) =5a(3) =6a(4) =8a(5) =9a(6) =11a(7) =22a(8) =88a(9) =232a(10) =272a(11) =303a(12) =333a(13) =383a(14) =434a(15) =454a(16) =555a(17) =787a(18) =797a(19) =848a(20) =999a(21) =1331a(22) =3663a(23) =6666a(24) =10201a(25) =14041a(26) =15951a(27) =17271a(28) =21912a(29) =22122