This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A153834 #4 Mar 31 2012 14:02:29 %S A153834 0,3,23,27,29,33,35,46,50,52,56,58,3655,3659,3667,3677,3681,3747,3751, %T A153834 3759,3763,3771,277,281,283,287,289,299,301,305,307,311,313,323,325, %U A153834 329,331,335,337,347,349,353,355,359,361,396,400,402,406,408,418,420 %N A153834 Index sequence to A089840: position of A089840(n) when applied to the right hand side subtree. %C A153834 The comments at A123694 concerning counts of fixed points apply also here. %H A153834 A. Karttunen, <a href="/A089839/a089839.c.txt">C-program for computing the initial terms of this sequence</a> %e A153834 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 A153834 a(n) < A123694(n) for all n > 0. Used to construct A153832 and A153833. %K A153834 nonn %O A153834 0,2 %A A153834 _Antti Karttunen_, Jan 07 2009