a(n) is the first semiprime that starts a sequence of n distinct semiprimes under the map A001414.
A345407
a(n) is the first semiprime that starts a sequence of n distinct semiprimes under the map A001414.
Terms
- a(0) =4a(1) =9a(2) =14a(3) =33a(4) =62a(5) =177a(6) =886a(7) =2649a(8) =5294a(9) =68653a(10) =496966a(11) =1490889a(12) =16896262
External references
- oeis: A345407