Greatest prime divisor of sum of first n primes.

Terms

a(0) =2a(1) =5a(2) =5a(3) =17a(4) =7a(5) =41a(6) =29a(7) =11a(8) =5a(9) =43a(10) =5a(11) =197a(12) =17a(13) =281a(14) =41a(15) =127a(16) =11a(17) =167a(18) =71a(19) =71a(20) =89a(21) =113a(22) =23a(23) =107a(24) =53a(25) =43a(26) =79a(27) =457a(28) =37a(29) =59