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%I #8 Jun 16 2016 03:55:18
%S 403,3269017,485165195,3584912846,26489122129,29048849665247,
%T 639843493530054949,114200738981568428366295718,
%U 66631762164108958342448140502408732626873,492345828601205839975486205911330449483779
%N Semiprimes of the form floor(e^k).
%H Giovanni Resta, <a href="/A117836/b117836.txt">Table of n, a(n) for n = 1..17</a>
%F a(n) = {floor(e^k) = p*q for integer k, p and q prime}. a(n) = A000149 INTERSECTION A001358.
%e a(1) = 403 = floor(e^6) = 13 * 31.
%e a(2) = 3269017 = floor(e^15) = 773 * 4229.
%e a(3) = 485165195 = floor(e^20) = 5 * 97033039.
%e a(4) = 3584912846 = floor(e^22) = 2 * 1792456423.
%e a(5) = 26489122129 = floor(e^24) = 103 * 257175943.
%Y Cf. A000040, A000149, A001358, A074496.
%K nonn
%O 1,1
%A _Jonathan Vos Post_, Apr 30 2006
%E a(6)-a(10) from _Giovanni Resta_, Jun 15 2016
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