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 A062176 #10 Jun 01 2018 06:55:29
%S A062176 0,1,1,1,0,5,1,5,7,5,1,5,1,5,10,13,1,11,1,5,4,5,1,5,0,5,16,13,1,5,1,
%T A062176 13,25,5,30,29,1,5,25,5,1,17,1,37,25,5,1,29,43,25,25,21,1,11,20,5,25,
%U A062176 5,1,5,1,5,25,13,40,23,1,57,25,55,1,29,1,5,25,49,16,5,1,45,16,5,1,17,30,5
%N A062176 a(n) = 5^(n-1) mod n.
%H A062176 Harry J. Smith, <a href="/A062176/b062176.txt">Table of n, a(n) for n = 1..1000</a>
%H A062176 <a href="/index/Ps#pseudoprimes">Index entries for sequences related to pseudoprimes</a>
%o A062176 (PARI) { for (n=1, 1000, write("b062176.txt", n, " ", 5^(n - 1)%n) ) } \\ _Harry J. Smith_, Aug 02 2009
%Y A062176 Cf. A062172.
%K A062176 nonn
%O A062176 1,6
%A A062176 _Henry Bottomley_, Jun 12 2001