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 A062541 #13 Jun 29 2018 03:59:58
%S A062541 1,8,72,622,5318,45417,387852,3312153,28284912,241545633,2062735514,
%T A062541 17615213065,150429237853,1284625710591,10970362144062,93683977036770,
%U A062541 800036264817077,6832097070038330,58344293161634133,498244757010106385
%N A062541 a(n) = floor(Pi^n * e^n).
%H A062541 Harry J. Smith, <a href="/A062541/b062541.txt">Table of n, a(n) for n = 0..200</a>
%o A062541 (PARI) for(n=0,22,print(floor(Pi^n*exp(1)^n)))
%o A062541 (PARI) { default(realprecision, 200); PiE=Pi*exp(1); for (n=0, 200, write("b062541.txt", n, " ", PiE^n\1) ) } \\ _Harry J. Smith_, Aug 08 2009
%K A062541 easy,nonn
%O A062541 0,2
%A A062541 _Jason Earls_, Jun 25 2001