cp's OEIS Frontend

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.

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A080977 a(n) = A080272(2*n)/A080292(n).

Original entry on oeis.org

1, 1, 6, 2, 14, 14, 22, 22, 18, 18, 46, 46, 62, 62, 26, 26
Offset: 0

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Author

Antti Karttunen, Mar 02 2003

Keywords

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.

A083941 A014486-encoding of symmetric binary trees.

Original entry on oeis.org

0, 2, 50, 844, 906, 13624, 13876, 14642, 14892, 15402, 218352, 219368, 222436, 223448, 225492, 234722, 235730, 238796, 239800, 241844, 246986, 247986, 250028, 254122, 3494880, 3498960, 3511240, 3515312, 3523496, 3560388, 3564452, 3576728
Offset: 0

Views

Author

Antti Karttunen, May 13 2003

Keywords

Links

Crossrefs

Subsets: A084107, A080263, A080293.

Formula

a(n) = A014486(A083940(n)).
Previous Showing 11-12 of 12 results.

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

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