Sum of distinct prime divisors of prime(n)*prime(n-1) - 1.

Terms

a(0) =5a(1) =9a(2) =19a(3) =21a(4) =73a(5) =18a(6) =32a(7) =111a(8) =42a(9) =451a(10) =196a(11) =381a(12) =883a(13) =108a(14) =93a(15) =526a(16) =266a(17) =232a(18) =72a(19) =2593a(20) =36a(21) =162a(22) =1236a(23) =98a(24) =112a(25) =752a(26) =55a(27) =26a(28) =3081a(29) =55