A186110 - OEIS

%I #5 Mar 30 2012 17:22:57

%S 2,4,16,8,128,256,16,2048,8192,32768,32768,262144,16384,2097152,

%T 8388608,16777216,33554432,134217728,536870912,1073741824,4294967296,

%U 4294967296,34359738368,137438953472,274877906944,137438953472,2199023255552,4398046511104,4398046511104,35184372088832

%N Denominator of the cumulative frequency of the dropping time in the Collatz iteration.

%C The numerators are in A186109. The frequency of the n-th dropping time is A186107(n)/A186108(n).

%H <a href="/index/3#3x1">Index entries for sequences related to 3x+1 (or Collatz) problem</a>

%F a(n) = denominator of sum_{k=1..n} A186009(k) / 2^A020914(k-1).

%Y Cf. A126241 (dropping times)

%K nonn,frac

%O 1,1

%A _T. D. Noe_, Feb 12 2011