%I #8 Jun 10 2021 22:30:59
%S 1,4,7,10,13,46,49,64,67,79,112,124,127,139,151,232,244,262,310,325,
%T 349,352,364,403,415,418,442,457,505,571,583,661,685,766,769,850,874,
%U 952,964,1057,1126,1432,1519,1552,1639,1945,2014,2050,2140,2434,2458
%N Sorted positions of the elements of the quasicyclic group Z+(2a+1)/(2^b) [a > 0 and a < 2^(b-1), b > 0] at the ]0,1[ side of the Stern-Brocot Tree (A007305/A007306).
%C It is easily proved that in the denominators given by A007306, the even values occur only at every third position, but can one find a simple rule for these positions of the denominators which are the powers of 2 only?
%H <a href="/index/St#Stern">Index entries for sequences related to Stern's sequences</a>
%Y Permutation of A065674. Cf. A065811, A065812. Gives the positions of zeros in A065936.
%K nonn
%O 1,2
%A _Antti Karttunen_, Nov 22 2001