id:A080541 - OEIS Search Results

Search: id:A080541

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In binary representation: keep the first digit and rotate left the others.

+0
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	OFFSET	`1,2`
	COMMENT	`Permutation of natural numbers with inverse = A080542: A080542(a(n))=a(A080542(n))=n;` `let r(n,0)=n, r(n,k)=a(r(n,k-1)) for k>0, then r(n,floor(log2(n)))=n and for n>1: r(n,floor(log2(n))-1)=A080542(n).`
	LINKS	`Index entries for sequences that are permutations of the natural numbers`
	EXAMPLE	`a(20)=a('10100')='11000'=24; a(24)=a('11000')='10001'=17.`
	CROSSREFS	`Cf. A053645, A000523, A007088, A080413, A080543.` `Sequence in context: A085175 A130111 A104182 this_sequence A072759 A080542 A072758` `Adjacent sequences: A080538 A080539 A080540 this_sequence A080542 A080543 A080544`
	KEYWORD	`nonn,base`
	AUTHOR	`Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Feb 20 2003`

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Last modified November 27 22:38 EST 2009. Contains 167602 sequences.

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