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 A121928 #27 Sep 15 2024 06:51:38
%S A121928 0,1,2,3,3,4,5,5,6,7,7,8,9,9,10,11,11,12,13,13,14,15,15,16,17,18,18,
%T A121928 19,20,20,21,22,22,23,24,24,25,26,26,27,28,28,29,30,30,31,32,33,33,34,
%U A121928 35,35,36,37,37,38,39,39,40,41,41,42,43,43,44,45,45,46,47,48,48,49,50,50
%N A121928 a(n) = ceiling(n*(e^Pi - Pi^e)).
%H A121928 Vincenzo Librandi, <a href="/A121928/b121928.txt">Table of n, a(n) for n = 0..999</a> [Offset shifted by _Georg Fischer_, Sep 02 2022]
%t A121928 With[{a = E^Pi - Pi^E}, Ceiling[a Range[0, 80]]] (* _Vincenzo Librandi_, Feb 21 2013 *)
%o A121928 (PARI) for(n=0,50, print1(ceil(n*(exp(Pi) - Pi^exp(1))), ", ")) \\ _G. C. Greubel_, Nov 06 2017
%o A121928 (Magma) C<i> := ComplexField(); [Ceiling(n*(Exp(1)^Pi(C) - Pi(C)^Exp(1) )): n in [0..50]]; // _G. C. Greubel_, Nov 06 2017
%Y A121928 Cf. A121854, A121855, A121856, A121857, A121929, A121930.
%K A121928 nonn,easy
%O A121928 0,3
%A A121928 _Mohammad K. Azarian_, Sep 02 2006
%E A121928 Offset corrected by _Mohammad K. Azarian_, Nov 20 2008
%E A121928 Offset changed to 0 by _Georg Fischer_, Sep 02 2022