login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A089870 Permutation of natural numbers induced by the Catalan bijection gma089870 acting on the parenthesizations/binary trees encoded by A014486/A063171. 3
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 22, 21, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 36, 35, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 50, 49, 51, 52, 53, 54, 55, 60, 61, 63, 62, 56, 57, 64, 59, 58, 65, 66, 67, 68, 69 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,3
COMMENTS
This Catalan bijection arises when we apply the Catalan bijection A085170 to each top-level subtree (sub-parenthesization).
LINKS
PROG
(Scheme function implementing this automorphism on list-structures:)
(define (gma089870! s) (for-each gma085170! s) s)
CROSSREFS
Inverse of A089869.
Number of cycles: A090827. Number of fixed-points: A000129. Max. cycle size: A086586. LCM of cycle sizes: A086587. (In range [A014137(n-1)..A014138(n-1)] of this permutation, possibly shifted one term left or right).
Sequence in context: A132263 A089868 A089867 * A089869 A358121 A335524
KEYWORD
nonn
AUTHOR
Antti Karttunen, Dec 20 2003
STATUS
approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified April 19 19:02 EDT 2024. Contains 371798 sequences. (Running on oeis4.)