a(n) = Sum(Sum p_i, {Sum p_i=prime(n)}, p_i is prime).

Terms

a(0) =2a(1) =3a(2) =10a(3) =21a(4) =66a(5) =117a(6) =289a(7) =437a(8) =920a(9) =2523a(10) =3441a(11) =8103a(12) =13776a(13) =17759a(14) =28858a(15) =57399a(16) =109150a(17) =134078a(18) =243210a(19) =355497a(20) =427853a(21) =733278a(22) =1036504a(23) =1711648a(24) =3243583a(25) =4414609a(26) =5136713a(27) =6919797a(28) =8012154a(29) =10692625