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%I #2 Mar 31 2012 14:02:18
%S 0,1,2,2,3,2,3,3,3,2,4,2,3,3,3,3,4,3,2,3,4,4,3,3,2,4,2,3,4,3,2,4,3,3,
%T 3,4,3,2,3,4,3,2,3,6,3,3,3,4,3,3,3,3,3,2,4,3,2,4,5,3,2,4,3,2,3,3,4,2,
%U 4,3,2,3,5,2,4,2,6,3,3,3,3,3,2,4,2,3,4,5,5,3,3,2,5,2,5,2,3,4,2,4,3,3,4,3,2
%N Top-level length of each parenthesization/root degree of general trees encoded in A080070.
%F a(n) = A057515(A080068(n))
%Y Cf. A080070, A080090.
%K nonn
%O 0,3
%A _Antti Karttunen_ Jan 27 2003
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