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 A121903 #26 Jan 06 2023 13:27:13 %S A121903 1,23,505,11329,254434,5714357,128339633,2882400038,64736277049, %T A121903 1453922256330,32653869265130,733378399940297,16471061151498381, %U A121903 369926160190271627,8308229975861003526,186595847388277259848,4190785566084546949288,94121513992523815815370 %N A121903 a(n) = ceiling(Pi^(n*e)). %H A121903 Vincenzo Librandi, <a href="/A121903/b121903.txt">Table of n, a(n) for n = 0..699</a> %t A121903 Ceiling[Pi^(E Range[0, 20])] (* _Vincenzo Librandi_, Feb 21 2013 *) %o A121903 (PARI) for(n=0,50, print1(ceil(Pi^(n*exp(1))), ", ")) \\ _G. C. Greubel_, Nov 06 2017 %o A121903 (Magma) C<i> := ComplexField(); [Ceiling(Pi(C)^(n*Exp(1))): n in [0..50]]; // _G. C. Greubel_, Nov 06 2017 %Y A121903 Cf. A121854, A121855, A121856, A121857, A121904. %K A121903 nonn,easy %O A121903 0,2 %A A121903 _Mohammad K. Azarian_, Sep 01 2006 %E A121903 Offset corrected by _Georg Fischer_, Aug 18 2022 %E A121903 Offset corrected for b-file by _Sidney Cadot_, Jan 06 2023