a(n) = Sum_{m=1..n} Sum_{k=1..m} prime(k).

Terms

a(0) =2a(1) =7a(2) =17a(3) =34a(4) =62a(5) =103a(6) =161a(7) =238a(8) =338a(9) =467a(10) =627a(11) =824a(12) =1062a(13) =1343a(14) =1671a(15) =2052a(16) =2492a(17) =2993a(18) =3561a(19) =4200a(20) =4912a(21) =5703a(22) =6577a(23) =7540a(24) =8600a(25) =9761a(26) =11025a(27) =12396a(28) =13876a(29) =15469