A080977 - OEIS

A080977

a(n) = A080272(2*n)/A080292(n).

1, 1, 6, 2, 14, 14, 22, 22, 18, 18, 46, 46, 62, 62, 26, 26

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OFFSET

0,3

COMMENTS

This gives the orbit size (under the Catalan bijection A057505) for every other binomial-mod-2 tree A080263(2*n) divided by the orbit size of the corresponding branch-reduced tree A080293(n). See comment at A080972.

LINKS

Table of n, a(n) for n=0..15.

CROSSREFS

Sequence in context: A194100 A332351 A142867 * A095951 A116420 A069268

Adjacent sequences: A080974 A080975 A080976 * A080978 A080979 A080980

KEYWORD

nonn,more

AUTHOR

Antti Karttunen, Mar 02 2003

STATUS

approved