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This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A120707 Number of cycles in range [A014137(n-1)..A014138(n-1)] of permutation A120705/A120706.

Original entry on oeis.org

1, 1, 1, 2, 3, 6, 10, 20, 39, 72, 138, 286, 512
Offset: 0

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Author

Antti Karttunen, Jun 28 2006

Keywords

Comments

The number of orbits to which the corresponding automorphisms partition the set of A000108(n) binary trees of n internal nodes.

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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