A080292 Orbit size of each tree A080293(n) under Donaghey's "Map M" Catalan automorphism.

1, 3, 9, 9, 81, 81, 81, 27, 1701, 1701, 1701, 1701, 2673, 2673, 891, 891

Offset: 0

Author

Antti Karttunen, Mar 02 2003

Keywords

• nonn
• more

Comments

This is the size of the cycle containing A080295(n) in the permutations A057505/A057506.

Crossrefs

A080977(n) = A080272(2*n)/a(n). A080302(n) = a(n)/3 for n>0. Cf. A080973/A080975.

Formula

a(n) = A080967(A080295(n))