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 A347264 #28 Aug 28 2021 18:22:32 %S A347264 1,1,4,1,4,4,13,2,13,4,13,4,10,13,40,4,13,13,22,5,16,13,40,6,22,10, %T A347264 2308,13,22,40,2308,8,25,13,40,13,28,22,76,10,2308,16,49,13,34,40, %U A347264 2308,12,37,22,58,13,40,2308,2308,14,49,22,76,40,46,2308,2308,16,49,25 %N A347264 Largest value in the 3x+1 sequence starting at n, divided by 4. %C A347264 a(n) is the largest value in the n-th row of A347270 divided by 4. %H A347264 <a href="/index/3#3x1">Index entries for sequences related to 3x+1 (or Collatz) problem</a> %F A347264 a(n) = A056959(n)/4. %e A347264 For n = 1 the 3x+1 sequence starting in 1 is 1, 4, 2, 1, 4, 2, 1, 4, 2, 1, ... The largest value is 4 and 4/4 = 1 so a(1) = 1. %e A347264 For n = 7 the 3x+1 sequence starting in 7 is 7, 22, 11, 34, 17, 52, 26, 13, 40, 20, 10, 5, 16, 8, 4, 2, 1, 4, 2, 1, ... The largest value is 52 and 52/4 = 13 so a(7) = 13. %Y A347264 [1, 1] together with A328147 (essentially the same sequence). %Y A347264 Cf. A006370, A056959, A347270. %K A347264 nonn %O A347264 1,3 %A A347264 _Omar E. Pol_, Aug 27 2021