This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A117836 #17 Sep 15 2024 01:52:43
%S A117836 403,3269017,485165195,3584912846,26489122129,29048849665247,
%T A117836 639843493530054949,114200738981568428366295718,
%U A117836 66631762164108958342448140502408732626873,492345828601205839975486205911330449483779
%N A117836 Semiprimes of the form floor(e^k).
%H A117836 Giovanni Resta, <a href="/A117836/b117836.txt">Table of n, a(n) for n = 1..17</a>
%F A117836 A000149 Intersection A001358.
%e A117836 a(1) = 403 = floor(e^6) = 13 * 31.
%e A117836 a(2) = 3269017 = floor(e^15) = 773 * 4229.
%e A117836 a(3) = 485165195 = floor(e^20) = 5 * 97033039.
%e A117836 a(4) = 3584912846 = floor(e^22) = 2 * 1792456423.
%e A117836 a(5) = 26489122129 = floor(e^24) = 103 * 257175943.
%t A117836 Select[Table[Floor[Exp[k]],{k,100}],PrimeOmega[#]==2&] (* _James C. McMahon_, Sep 14 2024 *)
%Y A117836 Cf. A000040, A000149, A001358, A074496.
%K A117836 nonn
%O A117836 1,1
%A A117836 _Jonathan Vos Post_, Apr 30 2006
%E A117836 a(6)-a(10) from _Giovanni Resta_, Jun 15 2016