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 A111211 #17 Jun 21 2017 22:05:13 %S A111211 1,3,9,11,17,33,51,73,99,101,137,153,187,219,303,411,561,657,803,909, %T A111211 1111,1233,1241,1507,1683,1717,2329,2409,3333,3723,4521,5151,6987, %U A111211 7227,7373,9999,10001,11169,13563,13651,13837,15453,18887,20961,22119,25619 %N A111211 Divisors of 10^16 - 1. %H A111211 Nathaniel Johnston, <a href="/A111211/b111211.txt">Table of n, a(n) for n = 1..192</a> (full sequence) %H A111211 <a href="/index/Di#divisors">Index entries for sequences related to divisors of numbers</a> %t A111211 Divisors[10^16-1] (* _Harvey P. Dale_, Aug 30 2014 *) %o A111211 (PARI) divisors(10^16-1) \\ _Charles R Greathouse IV_, Jun 21 2017 %Y A111211 Cf. A018282, A018766, A027894, A027893, A027892, A027891, A027890, A027889, A027895, A027896, A027897, A109933, A106305, A111117, A001270, A007138, A046107, A112505. %K A111211 nonn,fini,full,easy %O A111211 1,2 %A A111211 Douglas Winston (douglas.winston(AT)srupc.com), Oct 25 2005