n-th index k such that p(k) + p(k+6) = p(k+2) + p(k+4).

Terms

a(0) =3a(1) =14a(2) =16a(3) =18a(4) =44a(5) =59a(6) =70a(7) =72a(8) =73a(9) =77a(10) =78a(11) =101a(12) =104a(13) =112a(14) =128a(15) =131a(16) =140a(17) =143a(18) =146a(19) =147a(20) =148a(21) =159a(22) =160a(23) =171a(24) =172a(25) =190a(26) =193a(27) =225a(28) =238a(29) =252