1000000n+1, 1000000n+3, 1000000n+7, 1000000n+9 are all primes.

Terms

a(0) =14311a(1) =14659a(2) =23299a(3) =40861a(4) =43303a(5) =46405a(6) =62239a(7) =67327a(8) =77071a(9) =94237a(10) =102796a(11) =115201a(12) =120220a(13) =134968a(14) =138721a(15) =152980a(16) =252715a(17) =260947a(18) =272365a(19) =274534a(20) =285244a(21) =298342a(22) =304489a(23) =305713a(24) =311032a(25) =318802a(26) =324025a(27) =325321a(28) =338908a(29) =343885