id:A074466 - OEIS Search Results

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a(n)=GCD[n^3, sigma(n^3),phi(n^3)].

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1, 1, 1, 1, 1, 24, 1, 1, 1, 20, 1, 8, 1, 8, 15, 1, 1, 3, 1, 4, 1, 8, 1, 24, 1, 4, 1, 16, 1, 1800, 1, 1, 3, 4, 25, 1, 1, 8, 1, 4, 1, 24, 1, 8, 3, 8, 1, 8, 1, 5, 9, 4, 1, 12, 1, 16, 1, 4, 1, 480, 1, 8, 1, 1, 65, 72, 1, 4, 3, 200, 1, 3, 1, 4, 5, 8, 1, 24, 1, 4, 1, 4, 1, 64, 5, 8, 3, 88, 1, 180, 7, 16, 1 (list; graph; listen)

	OFFSET	`1,6`
	FORMULA	`a(n)=A74389[n^3]`
	EXAMPLE	`n=10:GCD[1000,2340,400]=20=a(10)`
	MATHEMATICA	`Table[Apply[GCD, {w^3, DivisorSigma[1, w^3], EulerPhi[w^3]}], {w, 1, 128}]`
	CROSSREFS	`Cf. A000005, A000010, A074389, A074465.` `Sequence in context: A040582 A102914 A040583 this_sequence A040579 A040580 A040578` `Adjacent sequences: A074463 A074464 A074465 this_sequence A074467 A074468 A074469`
	KEYWORD	`nonn`
	AUTHOR	`Labos E. (labos(AT)ana.sote.hu), Aug 23 2002`

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

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