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%I #5 Jan 11 2024 10:24:55
%S 1,3,16,1441,41888,3376173
%N Orbit size of each tree A080263(n) under Meeussen's bf<->df map on binary trees.
%C This is the size of the cycle containing A080265(n) in the permutations A057117/A057118.
%F a(n) = A080311(A080265(n)).
%Y Cf. A080274, A080297.
%K nonn,more
%O 0,2
%A _Antti Karttunen_, Mar 02 2003
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