A186110 Denominator of the cumulative frequency of the dropping time in the Collatz iteration.

2, 4, 16, 8, 128, 256, 16, 2048, 8192, 32768, 32768, 262144, 16384, 2097152, 8388608, 16777216, 33554432, 134217728, 536870912, 1073741824, 4294967296, 4294967296, 34359738368, 137438953472, 274877906944, 137438953472, 2199023255552, 4398046511104, 4398046511104, 35184372088832

Offset

1,1

Comments

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

Links

Table of n, a(n) for n=1..30.

Index entries for sequences related to 3x+1 (or Collatz) problem

Formula

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

Crossrefs

Cf. A126241 (dropping times)

Sequence in context: A019540 A109584 A352217 * A073923 A153666 A098819

Adjacent sequences: A186107 A186108 A186109 * A186111 A186112 A186113

Keyword

nonn,frac

Author

T. D. Noe, Feb 12 2011

Status

approved