id:A027414 - OEIS Search Results

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G.f. for Moebius transform is (1 + x) / (1 + x^4).

+0
1

1, 2, 1, 2, 0, 1, 1, 2, 2, 2, 1, 1, 0, 1, 0, 2, 2, 3, 1, 2, 0, 1, 1, 1, 1, 2, 2, 1, 0, 0, 1, 2, 2, 4, 0, 3, 0, 1, 0, 2, 2, 0, 1, 1, 0, 1, 1, 1, 2, 4, 2, 2, 0, 2, 0, 1, 2, 2, 1, 0, 0, 1, 1, 2, 0, 2, 1, 4, 0, 0, 1, 3, 2, 2, 1, 1, 0, 0, 1, 2, 3, 4, 1, 0, 0, 1, 0, 1, 2, 2, 0, 1, 0, 1, 0, 1, 2, 3, 3, 4, 0, 2, 1, 2, 0 (list; graph; listen)

	OFFSET	`0,2`
	LINKS	`N. J. A. Sloane, Transforms`
	FORMULA	`Moebius transform is period 8 sequence [1, 1, 0, 0, -1, -1, 0, 0, ...]. - Michael Somos Sep 20 2005` `G.f.: Sum_{k>0} x^k*(1+x^k)/(1+x^(4k)). - Michael Somos Sep 20 2005`
	PROGRAM	`(PARI) a(n)=if(n<1, 0, sumdiv(n, d, kronecker(-4, (d-1)%8\2+1))) /* Michael Somos Sep 20 2005 */`
	CROSSREFS	`Sequence in context: A092149 A127173 A035160 this_sequence A140083 A057985 A135387` `Adjacent sequences: A027411 A027412 A027413 this_sequence A027415 A027416 A027417`
	KEYWORD	`nonn`
	AUTHOR	`njas`

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Last modified July 25 07:41 EDT 2008. Contains 142293 sequences.

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