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 A116452 #4 Mar 30 2012 18:50:54 %S A116452 1,1,2,2,1,1,2,2,1,3,1,3,2,2,1,2,2,3,3,1,3,1,2,2,2,4,1,2,2,4,1,3,1,3, %T A116452 3,2,1,2,3,2,3,1,4,2,4,2,2,1,4,1,2,3,2,3,1,3,2,3,1,5,1,2,3,3,2,3,1,5, %U A116452 4,2,1,4,2,2,2,4,1,4,2,3,2,2,2,1,3,3,4,1,3,1,4,3,2,1,5,1,3,2,5,1,3,2,3,3,2 %N A116452 Number of prime factors of A116451. %C A116452 a(n) = A001222(A116451(n)); %C A116452 record values: A116453(n) = a(A116454(n)). %K A116452 nonn %O A116452 0,3 %A A116452 _Reinhard Zumkeller_, Feb 16 2006