id:A127378 - OEIS Search Results

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

+0
6

0, 1, 3, 2, 7, 8, 6, 5, 4, 17, 18, 20, 22, 21, 14, 15, 19, 12, 13, 16, 11, 10, 9, 45, 46, 48, 50, 49, 54, 55, 61, 63, 64, 57, 62, 59, 58, 37, 38, 39, 41, 40, 51, 52, 56, 31, 32, 60, 34, 36, 35, 42, 43, 53, 28, 29, 47, 33, 26, 27, 44, 30, 25, 24, 23, 129, 130, 132, 134, 133 (list; graph; listen)

	OFFSET	`0,3`
	COMMENT	`Used to construct A127380.`
	LINKS	`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 (A127378! s) (cond ((null? s)) ((null? (cdr s)) (A069770! s) (A127378! (cdr s))) ((null? (car s)) (A069770! s) (A127380! (car s))) (else (A127380! s))) s)`
	CROSSREFS	`Inverse: A127377. A127302(a(n)) = A127302(n) holds for all n.` `Sequence in context: A089863 A069767 A154458 this_sequence A122302 A131159 A086426` `Adjacent sequences: A127375 A127376 A127377 this_sequence A127379 A127380 A127381`
	KEYWORD	`nonn`
	AUTHOR	`Antti Karttunen (His-Firstname.His-Surname(AT)gmail.com), Jan 16 2007`

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Last modified December 7 08:40 EST 2009. Contains 170430 sequences.

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