Sum of composite numbers less than n-th prime.

Terms

a(0) =0a(1) =0a(2) =4a(3) =10a(4) =37a(5) =49a(6) =94a(7) =112a(8) =175a(9) =305a(10) =335a(11) =505a(12) =622a(13) =664a(14) =799a(15) =1049a(16) =1329a(17) =1389a(18) =1709a(19) =1916a(20) =1988a(21) =2368a(22) =2611a(23) =3041a(24) =3692a(25) =3989a(26) =4091a(27) =4406a(28) =4514a(29) =4847