id:A088840 - OEIS Search Results

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Denominator of quotient=sigma[5n]/sigma[n].

+0
4

1, 1, 1, 7, 1, 1, 1, 5, 1, 1, 1, 7, 1, 1, 1, 31, 1, 1, 1, 7, 1, 1, 1, 5, 1, 1, 1, 7, 1, 1, 1, 21, 1, 1, 1, 7, 1, 1, 1, 5, 1, 1, 1, 7, 1, 1, 1, 31, 1, 1, 1, 7, 1, 1, 1, 5, 1, 1, 1, 7, 1, 1, 1, 127, 1, 1, 1, 7, 1, 1, 1, 5, 1, 1, 1, 7, 1, 1, 1, 31, 1, 1, 1, 7, 1, 1, 1, 5, 1, 1, 1, 7, 1, 1, 1, 21, 1, 1, 1, 7, 1, 1 (list; graph; listen)

	OFFSET	`1,4`
	MATHEMATICA	`Table[Numerator[DivisorSigma[1, 5*n]/DivisorSigma[1, n]], {n, 1, 128}]`
	CROSSREFS	`Cf. A088837-A088841, A038712, A080278, A000203.` `Sequence in context: A140213 A091258 A072101 this_sequence A165725 A115064 A086868` `Adjacent sequences: A088837 A088838 A088839 this_sequence A088841 A088842 A088843`
	KEYWORD	`easy,nonn,mult`
	AUTHOR	`Labos E. (labos(AT)ana.sote.hu), Nov 04 2003`

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Last modified December 10 00:48 EST 2009. Contains 170565 sequences.

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