Numbers k such that A001414(k) and A001414(A004086(k)) are twin primes p, p+2.

Terms

a(0) =405a(1) =412a(2) =850a(3) =25315a(4) =49419a(5) =50127a(6) =224315a(7) =293394a(8) =308700a(9) =697136a(10) =801350a(11) =811910a(12) =997425a(13) =1118520a(14) =1152000a(15) =1177250a(16) =1550520a(17) =1659350a(18) =1725332a(19) =1739640a(20) =1824500a(21) =1976895a(22) =2141150a(23) =2580640a(24) =2580831a(25) =3530466a(26) =3718376a(27) =4050405a(28) =4459455a(29) =4536532