Primes p of the form p = 1 + 840*k for some k.

Terms

a(0) =2521a(1) =3361a(2) =4201a(3) =5881a(4) =7561a(5) =9241a(6) =12601a(7) =13441a(8) =14281a(9) =15121a(10) =18481a(11) =20161a(12) =21001a(13) =21841a(14) =26041a(15) =26881a(16) =29401a(17) =30241a(18) =31081a(19) =33601a(20) =35281a(21) =41161a(22) =42841a(23) =45361a(24) =47041a(25) =47881a(26) =51241a(27) =52081a(28) =54601a(29) =55441