a(n) = n*prime(n) - sum_{i=1..n-1} prime(i).

Terms

a(0) =2a(1) =4a(2) =10a(3) =18a(4) =38a(5) =50a(6) =78a(7) =94a(8) =130a(9) =190a(10) =212a(11) =284a(12) =336a(13) =364a(14) =424a(15) =520a(16) =622a(17) =658a(18) =772a(19) =852a(20) =894a(21) =1026a(22) =1118a(23) =1262a(24) =1462a(25) =1566a(26) =1620a(27) =1732a(28) =1790a(29) =1910