%I
%S 0,1,2,2,3,2,5,3,5,5,6,8,8,9,8,11,9,11,11,12,12,13,14,14,15,17,17,18,
%T 17,20,18,20,20,21,20,23,21,23,23,24,26,26,27,26,29,27,29,29,30,29,32,
%U 30,32,32,33,35,35,36,35,38,36,38,38,39,41,41,42,41,44,42,44,44,45,44,47,45,47
%N The second of three Hofstadter parentschild sequences of Thomas Stoll.
%H Hugo Pfoertner, <a href="/A151663/b151663.txt">Table of n, a(n) for n = 0..10000</a>
%H Th. Stoll, <a href="http://www.fq.math.ca/Papers1/46_471/Stoll_1108.pdf">On Hofstadter's married functions</a>, Fib. Q., 46/47 (2008/2009), 6267.
%Y See A151662, A151664. Cf. A005206, A005378, A005379.
%K nonn
%O 0,3
%A _N. J. A. Sloane_, May 30 2009
