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 A165501 #8 Jun 02 2025 02:04:50 %S A165501 1,2,5,6,2,150,19,16,12,1536160080,8,9918821194590,300,188,65, %T A165501 341976204789992332560,157,2166703103992332274919550,24,450,3072320160 %N A165501 Minimal common difference of maximal arithmetic progression starting at n such that each term k has tau(k)=tau(n). %C A165501 a(1) is not well defined, since the maximal progression has only one term. %e A165501 For n=6, A165500(n)=3, and the least difference d such that tau(6) = tau(6+d) = tau(6+2d) is d=2, so a(6)=2. %Y A165501 Cf. A165499, A165500, A088430. %K A165501 hard,nonn,more %O A165501 2,2 %A A165501 _Hugo van der Sanden_, Sep 21 2009, Oct 09 2009 %E A165501 Extended to n=22 taking advantage of A088430 for n=19, _Hugo van der Sanden_, Jun 02 2015