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 A175503 #10 Jun 05 2016 04:00:11
%S A175503 1,2,2,3,4,2,6,4,4,5,2,8,3,6,6,8,4,9,2,10,4,12,2,7,4,16,2,15,4,18,2,
%T A175503 14,3,3,12,6,10,8,8,5,6,9,8,12,12,10,3,16,6,20,2,24,4,14,6,18,8,16,12,
%U A175503 9,10,10,16,9,3,18,12,15,6,24,8,20,4,21,2,30,4,32,2,27
%N A175503 a(n) = the number of divisors of A175502(n).
%C A175503 Each unordered pair {a(k),a(k-1)} occurs at most once in the sequence.
%H A175503 Ivan Neretin, <a href="/A175503/b175503.txt">Table of n, a(n) for n = 1..1000</a>
%Y A175503 Cf. A175502
%K A175503 nonn
%O A175503 1,2
%A A175503 _Leroy Quet_, May 31 2010
%E A175503 More terms from _Ivan Neretin_, Jun 05 2016