Sum_{0<j<k<=n} P(k)-P(j), where P(j)=A065091(j) is the j-th odd prime.

Terms

a(0) =2a(1) =8a(2) =26a(3) =52a(4) =98a(5) =156a(6) =242a(7) =376a(8) =528a(9) =740a(10) =996a(11) =1276a(12) =1608a(13) =2024a(14) =2530a(15) =3068a(16) =3708a(17) =4420a(18) =5170a(19) =6040a(20) =6994a(21) =8080a(22) =9350a(23) =10716a(24) =12132a(25) =13652a(26) =15226a(27) =16912a(28) =19004a(29) =21216