id:A127387 - OEIS Search Results

Search: id:A127387

Displaying 1-1 of 1 results found.

page 1

Signature-permutation of a Catalan automorphism, a self-inverse variant of A127377.

+0
6

0, 1, 3, 2, 8, 7, 6, 5, 4, 22, 21, 20, 18, 17, 14, 15, 19, 13, 12, 16, 11, 10, 9, 64, 63, 62, 59, 58, 54, 55, 61, 50, 49, 57, 48, 46, 45, 37, 38, 39, 41, 40, 51, 52, 60, 36, 35, 56, 34, 32, 31, 42, 43, 53, 28, 29, 47, 33, 27, 26, 44, 30, 25, 24, 23, 196, 195, 194, 190, 189 (list; graph; listen)

	OFFSET	`0,3`
	COMMENT	`Used to construct A127388.`
	LINKS	`A. Karttunen, Table of n, a(n) for n = 0..2055` `Index entries for signature-permutations of Catalan automorphisms`
	PROGRAM	`(Scheme implementation of this automorphism, destructive, that acts on S-expressions, i.e. list-structures:)` `(define (A127387! s) (cond ((null? s)) ((null? (car s)) (A069770! s) (A127387! (car s))) ((null? (cdr s)) (A069770! s) (A127387! (cdr s))) (else (A127388! s))) s)`
	CROSSREFS	`The number of cycles and the number of fixed points in range [A014137(n-1)..A014138(n-1)] of this involution are given by A127385 and A127389. (This automorphism has the same fixed points as A127377/A127378). A127302(a(n)) = A127302(n) holds for all n.` `Sequence in context: A130359 A122340 A082347 this_sequence A130360 A082348 A122339` `Adjacent sequences: A127384 A127385 A127386 this_sequence A127388 A127389 A127390`
	KEYWORD	`nonn`
	AUTHOR	`Antti Karttunen (His-Firstname.His-Surname(AT)gmail.com), Jan 16 2007`

page 1

Search completed in 0.002 seconds

Last modified September 7 15:23 EDT 2008. Contains 143483 sequences.

AT&T Labs Research