%I #19 Feb 24 2024 11:07:27
%S 1,2,4,6,8,14,18,46,48
%N Numbers k such that the sum of the first k Mersenne prime exponents is prime.
%Y Cf. A000043.
%K nonn,less,more
%O 1,2
%A _G. L. Honaker, Jr._
%E a(8)-a(9) from _Max Alekseyev_, Feb 23 2024
