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 A175501 #12 Feb 05 2018 22:00:34 %S A175501 1,2,2,3,2,4,2,6,4,3,4,4,5,2,8,2,9,4,6,2,10,2,12,6,3,6,8,4,8,6,6,7,4, %T A175501 12,2,5,4,10,4,9,2,16,2,15,4,16,4,18,4,14,2,20,4,15,2,18,8,3,8,8,12,4, %U A175501 20,2,14,6,12,8,10,6,10,8,9,6,16,6,9,8,16,8 %N A175501 a(n) = the number of divisors of A175500(n). %C A175501 Each ordered pair (a(k),a(k-1)) occurs at most once in the sequence. %H A175501 Paul Tek, <a href="/A175501/b175501.txt">Table of n, a(n) for n = 1..2473</a> %Y A175501 Cf. A175500. %K A175501 nonn %O A175501 1,2 %A A175501 _Leroy Quet_, May 31 2010 %E A175501 Terms a(26) and beyond from b-file by _Andrew Howroyd_, Feb 05 2018