%I A122791
%S A122791 3,4,9,2,6,5,1,8,5,2,1,8,6,4,2,4,9,1,2,3,0,5,5,6,0,3,3,7,5,2,9,6,8,0,6,
%T A122791 4,7,4,2,7,2,9,0,5,3,4,8,0,9,0,9,9,9,0,5,3,0,9,1,4,7,4,5,2,2,2,2,3,3,8,
%U A122791 4,4,0,7,2,0,8,2,7,6,0,5,9,1,8,7,0,2,2,8,5,5,1,9,1,0,3,4,6,7,5,4,8,1,4
%N A122791 Decimal expansion of the average "dropping time" of the reduced 3x+1 
               iteration.
%F A122791 Sum{k>0} k*A100982(k)/2^(A020914(k)-1) = 3.49265185218642491230556033752968...
%Y A122791 Cf. A122458 (dropping time of the reduced Collatz iteration), A100982, 
               A122790.
%Y A122791 Sequence in context: A001695 A019676 A019900 this_sequence A011429 A083437 
               A011292
%Y A122791 Adjacent sequences: A122788 A122789 A122790 this_sequence A122792 A122793 
               A122794
%K A122791 cons,nonn
%O A122791 1,1
%A A122791 T. D. Noe (noe(AT)sspectra.com), Sep 11 2006