Numbers k such that k divides the k-th semiprime.

Terms

a(0) =1a(1) =2a(2) =3a(3) =7a(4) =11a(5) =43a(6) =53a(7) =613367a(8) =613439a(9) =613451a(10) =613523a(11) =613549a(12) =613609a(13) =6384425461a(14) =6384425521a(15) =6384425569a(16) =6384425647