%I #7 Jan 29 2024 07:03:39
%S 0,1,6,43,51,389,416,477,504,551,4102,4191,4397,4485,4649,5100,5187,
%T 5393,5481,5645,5964,6051,6215,6489,47404,47700,48403,48697,49268,
%U 50833,51126,51828,52120,52691,53829,54120,54690,55690,59334,59627,60328
%N A014486-indices of symmetric binary trees.
%C Fixed points of permutation A057163.
%F a(0)=0, a(n)=A072764bi(n-1, A057163(n-1)).
%Y a(n) = A080300(A083941(n)). Cf. A083938, A084108.
%K nonn
%O 0,3
%A _Antti Karttunen_, May 13 2003