A143040 - OEIS

%I #9 Mar 17 2023 17:15:45

%S 24,184,2102,26608,322033,3741154,42314023,470041447,5153982388,

%T 55956463466,602751821279

%N 10^n-th number divisible by exactly two distinct primes.

%D J.-M. De Koninck, Ces nombres qui nous fascinent, Entry 184, pp 57, Ellipses, Paris 2008.

%F a(n)=A007774(10^n).

%Y Cf. A007774.

%K nonn,more

%O 1,1

%A _Lekraj Beedassy_, Jul 18 2008

%E a(8)-a(10) from _Donovan Johnson_, Mar 26 2010

%E a(11) from _Max Alekseyev_, Mar 17 2023