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 A226633 #7 Jun 15 2013 01:28:20 %S A226633 1,19,65,115,2263,113,109,95,65,989,293,511,505,769,211,311,1085,7471, %T A226633 1291,241,211,3605,1273,3841,313,15415,6329,563,3457,3095,1775,1483, %U A226633 436099,665,2011,2021,1003,1261,24607,1199,665,4397,1153,6839,6073,919,1189 %N A226633 Smallest positive integer in the primitive cycle(s) under iteration by the 3x-k function, where k=A226630(n). %C A226633 A cycle is called primitive if its elements are not a common multiple of the elements of another cycle. %C A226633 The 3x-k function T_k is defined by T_k(x) = x/2 if x is even, (3x-k)/2 if x is odd. %H A226633 Geoffrey H. Morley, <a href="/A226633/b226633.txt">Table of n, a(n) for n = 1..600</a> %Y A226633 Cf. A102280, A226634. %K A226633 nonn %O A226633 1,2 %A A226633 _Geoffrey H. Morley_, Jun 14 2013