id:A053641 - OEIS Search Results

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Rotate one binary digit to the right, calculate, then rotate one binary digit to the left.

+0
1

1, 1, 3, 1, 5, 3, 7, 1, 9, 3, 11, 5, 13, 7, 15, 1, 17, 3, 19, 5, 21, 7, 23, 9, 25, 11, 27, 13, 29, 15, 31, 1, 33, 3, 35, 5, 37, 7, 39, 9, 41, 11, 43, 13, 45, 15, 47, 17, 49, 19, 51, 21, 53, 23, 55, 25, 57, 27, 59, 29, 61, 31, 63, 1 (list; graph; listen)

	OFFSET	`1,3`
	FORMULA	`a(n) = A006257(A038572(n)), =n if n odd, =n-2^k+1 if n even and 2^k<=n<2^(k+1)`
	EXAMPLE	`a(60)=29 because starting with 111100 the right rotation produces 011110 written as 11110 (i.e. 30) and the left rotation produces 11101 (i.e. 29)`
	CROSSREFS	`Cf. A006257, A038572.` `Sequence in context: A078701 A116528 A081431 this_sequence A099551 A036233 A098985` `Adjacent sequences: A053638 A053639 A053640 this_sequence A053642 A053643 A053644`
	KEYWORD	`nonn`
	AUTHOR	`Henry Bottomley (se16(AT)btinternet.com), Mar 22 2000`

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Last modified August 29 17:54 EDT 2008. Contains 143238 sequences.

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