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 A062511 #18 Sep 08 2022 08:45:03
%S A062511 1,23,535,12392,286751,6635624,153552935,3553321281,82226315586,
%T A062511 1902773895292,44031505860632,1018919543279305,23578503968558226,
%U A062511 545622913077172100,12626092124920479898,292176517015939695007
%N A062511 a(n) = round(exp(n * Pi)).
%H A062511 Harry J. Smith, <a href="/A062511/b062511.txt">Table of n, a(n) for n = 0..100</a>
%t A062511 Round[Exp[Range[0,20]Pi]] (* _Harvey P. Dale_, Oct 06 2014 *)
%o A062511 (PARI) for(n=0,21,print1(round(exp(n*Pi)), ", "))
%o A062511 (PARI) { default(realprecision, 200); for (n=0, 100, write("b062511.txt", n, " ", round(exp(n*Pi))) ) } \\ _Harry J. Smith_, Aug 08 2009
%o A062511 (Magma) C<i> := ComplexField(); [Round(Exp(n*Pi(C))): n in [0..30]]; // _G. C. Greubel_, Jan 15 2018
%Y A062511 Cf. A062360, A121905.
%K A062511 easy,nonn
%O A062511 0,2
%A A062511 _Jason Earls_, Jun 24 2001