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 A050808 #25 Feb 16 2025 08:32:40
%S A050808 1,2,18,50,127,141,267,310,2290,4487,5391,14025
%N A050808 Numbers k such that floor(exp(k)) is prime.
%H A050808 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/e-Prime.html">e-Prime</a>
%t A050808 Do[ If[ PrimeQ[ Floor[ \[ExponentialE]^n] ], Print[n] ], {n, 0, 4750} ]
%t A050808 Select[Range[15000],PrimeQ[Floor[Exp[#]]]&] (* _Harvey P. Dale_, Oct 16 2012 *)
%o A050808 (PARI) is(n)=ispseudoprime(exp(n)\1) \\ _Charles R Greathouse IV_, Jan 03 2014
%Y A050808 Cf. A050809 (the actual primes), A000149, A040016, A037028, A000227, A004791, A059791, A059792.
%K A050808 nonn,hard,more
%O A050808 1,2
%A A050808 _Patrick De Geest_, Oct 15 1999
%E A050808 Corrected by _Naohiro Nomoto_, Feb 22 2001
%E A050808 More terms from _Vladeta Jovovic_, Feb 24 2001
%E A050808 More terms from _Robert G. Wilson v_, May 09 2001
%E A050808 a(11) = 5391 from _Eric W. Weisstein_, May 01 2006
%E A050808 a(12) from _Donovan Johnson_, Feb 04 2008