%I
%S 0,3,23,27,29,33,35,46,50,52,56,58,3655,3659,3667,3677,3681,3747,3751,
%T 3759,3763,3771,277,281,283,287,289,299,301,305,307,311,313,323,325,
%U 329,331,335,337,347,349,353,355,359,361,396,400,402,406,408,418,420
%N Index sequence to A089840: position of A089840(n) when applied to the right hand side subtree.
%C The comments at A123694 concerning counts of fixed points apply also here.
%H A. Karttunen, <a href="/A089839/a089839.c.txt">Cprogram for computing the initial terms of this sequence</a>
%e When A089840(1) = A069770 (swap binary tree sides) is applied to the right subtree of a binary tree, we get A089850 = A089840(3), thus a(1)=3. When A089840(12) = A074679 is applied to the right subtree of a binary tree, we get A154121 = A089840(3655), thus a(12)=3655.
%Y a(n) < A123694(n) for all n > 0. Used to construct A153832 and A153833.
%K nonn
%O 0,2
%A _Antti Karttunen_, Jan 07 2009
