id:A114077 - OEIS Search Results

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phi(n) times sigma(n) is a cube.

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1, 3, 119, 357, 2522, 6305, 6596, 6604, 7566, 18915, 19788, 19812, 20520, 24347, 24353, 26068, 26082, 28126, 47959, 58520, 64790, 65205, 70315, 73041, 73059, 73636, 75460, 78204, 84378, 143877, 156519, 164920, 175560, 194370, 210945 (list; graph; listen)

	OFFSET	`1,2`
	REFERENCES	`J.-M. De Koninck, Ces nombres qui nous fascinent, Entry 119, p. 41, Ellipses, Paris 2008.`
	EXAMPLE	`phi(357) * sigma(357) = 110592 = 48^3.`
	CROSSREFS	`Sequence in context: A009095 A037117 A143781 this_sequence A103743 A134230 A141440` `Adjacent sequences: A114074 A114075 A114076 this_sequence A114078 A114079 A114080`
	KEYWORD	`nonn`
	AUTHOR	`Giovanni Resta (g.resta(AT)iit.cnr.it), Feb 13 2006`

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Last modified November 18 20:14 EST 2008. Contains 147244 sequences.

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