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 A226683 #4 Jun 16 2013 01:13:26 %S A226683 91,179,505,31613,74611,1793597,2571053,2791627,3714313409, %T A226683 42325029259,107340863887,746389665271,15138375216875 %N A226683 Conjectured record-breaking values, for ascending positive integers k, of the maximal element of the primitive cycles of positive integers under iteration by the 3x-k function. %C A226683 A cycle is called primitive if its elements are not a common multiple of the elements of another cycle. %C A226683 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, where GCD(k,6)=1. %Y A226683 k = A226684(n). The smallest integer in the T_k cycle associated with a(n) is A226685(n). %Y A226683 Cf. A226624, A226667. %K A226683 nonn %O A226683 1,1 %A A226683 _Geoffrey H. Morley_, Jun 15 2013