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 A053629 #3 Mar 30 2012 18:51:20 %S A053629 2,4,3,6,5,8,4,6,14,12,10,7,5,16,18,8,12,18,6,28,9,15,21,26,20,12,33, %T A053629 10,7,32,22,25,34,24,21,36,11,16,38,45,8,21,39,12,15,46,20,26,18,30,9, %U A053629 42,13,40,54,33,24,30,58,70,66,20,14,62,55,54,10,64,30,28,18,50,68,48 %N A053629 Smallest integer where the harmonic mean of a(n) and A005279(n) is an integer. %C A053629 if m is not in A005279 then smallest integer to have an integer harmonic mean with m is m %Y A053629 Cf. A005279, A046793. %K A053629 nonn %O A053629 1,1 %A A053629 _Henry Bottomley_, Mar 20 2000