login
This site is supported by donations to The OEIS Foundation.

 

Logo

Please make a donation to keep the OEIS running. We are now in our 55th year. In the past year we added 12000 new sequences and reached 8000 citations (which often say "discovered thanks to the OEIS"). We need to raise money to hire someone to manage submissions, which would reduce the load on our editors and speed up editing.
Other ways to donate

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A074682 Permutation of natural numbers induced by the Catalan bijection gmA074682! acting on the parenthesizations encoded by A014486/A063171. 6
0, 1, 3, 2, 8, 7, 4, 6, 5, 22, 21, 17, 20, 18, 10, 9, 14, 19, 16, 11, 12, 15, 13, 64, 63, 58, 62, 59, 46, 45, 54, 61, 57, 48, 49, 55, 50, 27, 26, 23, 25, 24, 38, 37, 51, 60, 56, 42, 44, 53, 47, 29, 28, 30, 32, 31, 39, 40, 52, 43, 33, 34, 35, 41, 36, 196, 195, 189, 194, 190 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

Table of n, a(n) for n=0..69.

A. Karttunen, Gatomorphisms (with the complete Scheme source)

Index entries for sequences that are permutations of the natural numbers

PROG

(Scheme function implementing this automorphism on list-structures:)

(define (gmA074682! s) (cond ((pair? s) (gmA074682! (car s)) (gmA074682! (cdr s)) (gmrobr! s))) s)

CROSSREFS

Inverse of A074681. a(n) = A057163(A074683(A057163(n))). Occurs in A073200.

Sequence in context: A082336 A122333 A130356 * A131167 A127290 A131005

Adjacent sequences:  A074679 A074680 A074681 * A074683 A074684 A074685

KEYWORD

nonn

AUTHOR

Antti Karttunen, Sep 11 2002

STATUS

approved

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

License Agreements, Terms of Use, Privacy Policy. .

Last modified December 16 01:32 EST 2019. Contains 330013 sequences. (Running on oeis4.)