id:A140266 - OEIS Search Results

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Inverse permutation of A140265.

+0
3

1, 2, 3, 6, 8, 4, 7, 5, 9, 18, 20, 16, 24, 26, 22, 12, 14, 10, 19, 17, 21, 13, 11, 15, 25, 23, 27, 54, 56, 52, 60, 62, 58, 48, 50, 46, 72, 74, 70, 78, 80, 76, 66, 68, 64, 36, 38, 34, 42, 44, 40, 30, 32, 28, 55, 53, 57, 49, 47, 51, 61, 59, 63, 37, 35, 39, 31, 29, 33, 43, 41, 45 (list; graph; listen)

	OFFSET	`1,2`
	LINKS	`A. Karttunen, Table of n, a(n) for n = 1..729` `Index entries for sequences that are permutations of the natural numbers`
	FORMULA	`a(n) = Z->N(A117966(n-1)), where Z->N(z) = 2z if z>0 else 2\|z\|+1.`
	PROGRAM	`(Scheme:) (string-append (define (A140266 n) (Z->N (A117966 (- n 1))))` `(define (Z->N n) (if (positive? n) (* n 2) (+ 1 (* 2 (- n))))))`
	CROSSREFS	`Inverse: A140265. a(n) = A140264(n-1)+1.` `Sequence in context: A088414 A133441 A086254 this_sequence A140265 A127293 A138343` `Adjacent sequences: A140263 A140264 A140265 this_sequence A140267 A140268 A140269`
	KEYWORD	`nonn`
	AUTHOR	`Antti Karttunen (His-Firstname.His-Surname(AT)gmail.com), May 19 2008`

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Last modified December 16 17:18 EST 2009. Contains 170825 sequences.

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