Semiprimes k such that k is congruent to 7 modulo k's index in the sequence of semiprimes.

A356357

Semiprimes k such that k is congruent to 7 modulo k's index in the sequence of semiprimes.

Terms

    a(0) =4a(1) =21a(2) =25a(3) =205a(4) =26707a(5) =27679a(6) =3066877a(7) =3067067a(8) =3067097a(9) =3067117a(10) =3067147a(11) =3067177a(12) =3067557a(13) =3067567a(14) =3067577a(15) =3067607a(16) =3067717a(17) =348933193a(18) =348933421a(19) =348933439a(20) =44690978633a(21) =44690978899

External references