Partial sums of primes of the form 3*k-1.

Terms

a(0) =2a(1) =7a(2) =18a(3) =35a(4) =58a(5) =87a(6) =128a(7) =175a(8) =228a(9) =287a(10) =358a(11) =441a(12) =530a(13) =631a(14) =738a(15) =851a(16) =982a(17) =1119a(18) =1268a(19) =1435a(20) =1608a(21) =1787a(22) =1978a(23) =2175a(24) =2402a(25) =2635a(26) =2874a(27) =3125a(28) =3382a(29) =3645