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 A251140 #4 Nov 30 2014 16:53:01 %S A251140 0,1,1,2,2,3,2,2,1,2,2,3,2,4,1,2,2,3,3,2,2,1,1,2,2,3,3,2,5,1,3,2,4,2, %T A251140 2,2,4,2,3,2,2,3,1,3,2,3,2,4,2,3,1,5,2,3,3,2,4,4,2,2,1,1,2,2,6,3,3,2, %U A251140 4,2,4,2,3,2,5,3,2,3,1,3,2,3,3,5,2,2 %N A251140 Total number of prime factors of A098550(n). %C A251140 a(n) = A001222(A098550(n)). %H A251140 Reinhard Zumkeller, <a href="/A251140/b251140.txt">Table of n, a(n) for n = 1..10000</a> %o A251140 (Haskell) %o A251140 a251140 = a001222 . fromIntegral . a098550 %Y A251140 Cf. A001222, A098548, A251141, A251138. %K A251140 nonn %O A251140 1,4 %A A251140 _Reinhard Zumkeller_, Nov 30 2014