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 A251619 #6 Dec 10 2014 17:52:23 %S A251619 2,3,3,2,2,3,3,2,3,3,2,2,3,2,2,2,2,2,3,2,2,2,3,2,3,2,2,2,2,2,2,2,2,2, %T A251619 2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2, %U A251619 2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2 %N A251619 Smallest prime factor of smallest multiple of prime(n) in A098550. %C A251619 a(n) = A020639(A251618(n)); %C A251619 for n > 2: a(n) = A251715(n,1); %C A251619 conjecture: for n > 2: a(n) = 2 or a(n) = 3; %C A251619 conjecture: for n > 25: a(n) = 2. %H A251619 Reinhard Zumkeller, <a href="/A251619/b251619.txt">Table of n, a(n) for n = 1..1000</a> %o A251619 (Haskell) %o A251619 a251619 = a020639 . fromIntegral . a251618 %Y A251619 Cf. A098550, A020639, A251618, A251715. %K A251619 nonn %O A251619 1,1 %A A251619 _Reinhard Zumkeller_, Dec 07 2014