%I #10 Sep 13 2022 20:41:57
%S 1,2,1,4,8,4,1,2,1,16,32,16,1,2,1,4,8,4,1,2,1,64,128,64,1,2,1,4,8,4,1,
%T 2,1,16,32,16,1,2,1,4,8,4,1,2,1,256,512,256,1,2,1,4,8,4,1,2,1,16,32,
%U 16,1,2,1,4,8,4,1,2,1,64,128,64,1,2,1,4,8,4,1,2,1,16,32,16,1,2,1,4,8,4,1
%N A hierarchical sequence (W'2{2} - see A059126).
%H J. Wallgren, <a href="/A059126/a059126.txt">Hierarchical sequences</a>
%F a(3*n) = a(3*n+2) = A006519(n)^2, a(3*n+1) = 2*a(3*n). - _Sean A. Irvine_, Sep 13 2022
%Y Cf. A006519, A059126.
%K easy,nonn
%O 0,2
%A _Jonas Wallgren_, Feb 01 2001