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 A318673 #5 Sep 03 2018 23:02:34 %S A318673 0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,1,0,0,0,0,0,0,0, %T A318673 0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,1,0,0,0,0,0,0,0,3,0,0,0,0, %U A318673 0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0 %N A318673 The 2-adic valuation of A318672. %H A318673 Antti Karttunen, <a href="/A318673/b318673.txt">Table of n, a(n) for n = 1..65537</a> %F A318673 a(n) = A007814(A318672(n)). %o A318673 (PARI) \\ Use the program given in A318672. %Y A318673 Cf. A007814, A318672. %K A318673 nonn %O A318673 1,64 %A A318673 _Antti Karttunen_, Sep 03 2018