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 A347116 #5 Aug 22 2021 22:38:41 %S A347116 4,10,5,30,118,12,236,90,64,240,594,36,830,480,-116,270,1428,132,1784, %T A347116 720,1076,1200,2622,108,144,1680,458,1440,4178,-228,4772,810,1242, %U A347116 2880,2752,396,6810,3600,2318,2160,8364,2160,9200,3600,32,5280,10998,324,190,300,2508,5040,13994,924,5388,4320,3992,8400,17348,-684 %N A347116 Even bisection of A347115. %H A347116 <a href="/index/3#3x1">Index entries for sequences related to 3x+1 (or Collatz) problem</a> %H A347116 <a href="/index/Pri#prime_indices">Index entries for sequences computed from indices in prime factorization</a> %F A347116 a(n) = A347115(2*n). %o A347116 (PARI) A347116(n) = A347115(n+n); \\ The rest of code in A347115. %Y A347116 Cf. A347115. %K A347116 sign %O A347116 1,1 %A A347116 _Antti Karttunen_, Aug 20 2021