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 A105079 #5 Mar 30 2012 17:25:43 %S A105079 1,2,3,2,4,4,2,2,4,3,3,4,5,5,5,5,5,2,2,4,3,3,6,3,6,4,3,5,6,6,5,8,5,6, %T A105079 3,6,4,6,2,3,5,8,3,3,2,4,5,4,5,3,6,6,5,7,4,7,4,4,2,8 %N A105079 Number of distinct prime divisors of 1000^n - 3 where n = 1,2,3,.... %e A105079 If n=1, then 1000^n - 3 = 1000^1 - 3 = 997 which is a prime, so the first term is 1. %Y A105079 Cf. A105069, A105068. %K A105079 nonn %O A105079 1,2 %A A105079 _Parthasarathy Nambi_, Apr 06 2005