Smallest product of three distinct primes of the form n*k+1.

Terms

a(0) =30a(1) =105a(2) =1729a(3) =1105a(4) =13981a(5) =1729a(6) =88537a(7) =50881a(8) =51319a(9) =13981a(10) =137149a(11) =29341a(12) =548497a(13) =88537a(14) =285541a(15) =186337a(16) =3372529a(17) =51319a(18) =18326641a(19) =252601a(20) =1152271a(21) =137149a(22) =1809641a(23) =1366633a(24) =3828001a(25) =548497a(26) =4814857a(27) =645569a(28) =4797703a(29) =285541