id:A088839 - OEIS Search Results

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Numerator of sigma[5n]/sigma[n]. For denominator see A088840.

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7, 5, 7, 31, 7, 5, 7, 21, 7, 5, 7, 31, 7, 5, 7, 127, 7, 5, 7, 31, 7, 5, 7, 21, 7, 5, 7, 31, 7, 5, 7, 85, 7, 5, 7, 31, 7, 5, 7, 21, 7, 5, 7, 31, 7, 5, 7, 127, 7, 5, 7, 31, 7, 5, 7, 21, 7, 5, 7, 31, 7, 5, 7, 511, 7, 5, 7, 31, 7, 5, 7, 21, 7, 5, 7, 31, 7, 5, 7, 127, 7, 5, 7, 31, 7, 5, 7, 21, 7, 5, 7, 31 (list; graph; listen)

	OFFSET	`1,1`
	MATHEMATICA	`k=5; Table[Numerator[DivisorSigma[1, k*n]/DivisorSigma[1, n]], {n, 1, 128}]`
	CROSSREFS	`Cf. A038712, A088837-A088840, A080278, A000203.` `Sequence in context: A021136 A143297 A072449 this_sequence A111769 A111513 A153623` `Adjacent sequences: A088836 A088837 A088838 this_sequence A088840 A088841 A088842`
	KEYWORD	`easy,nonn,frac`
	AUTHOR	`Labos E. (labos(AT)ana.sote.hu), Nov 04 2003`

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

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