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

Terms

a(0) =0a(1) =1a(2) =6a(3) =17a(4) =44a(5) =81a(6) =142a(7) =217a(8) =324a(9) =485a(10) =666a(11) =913a(12) =1208a(13) =1529a(14) =1906a(15) =2373a(16) =2936a(17) =3533a(18) =4238a(19) =5019a(20) =5840a(21) =6787a(22) =7822a(23) =8995a(24) =10360a(25) =11825a(26) =13342a(27) =14967a(28) =16648a(29) =18445