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

Terms

a(0) =4a(1) =15a(2) =50a(3) =119a(4) =308a(5) =533a(6) =986a(7) =1463a(8) =2300a(9) =3741a(10) =4960a(11) =7289a(12) =9758a(13) =12083a(14) =15416a(15) =20193a(16) =25960a(17) =30561a(18) =38056a(19) =45369a(20) =51976a(21) =62489a(22) =72542a(23) =85707a(24) =102820a(25) =117261a(26) =130192a(27) =146697a(28) =161320a(29) =180009