A077100 - OEIS

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A077100

a(n)=lcm(A051612(n), A065387(n)), where A051612(n) = sigma(n) - phi(n) and A065387(n) = sigma(n) + phi(n).

0, 4, 6, 45, 10, 70, 14, 209, 133, 154, 22, 96, 26, 90, 32, 897, 34, 495, 38, 850, 220, 598, 46, 884, 561, 270, 638, 748, 58, 320, 62, 3713, 476, 1330, 72, 8137, 74, 546, 160, 3922, 82, 756, 86, 832, 918, 2350, 94, 3780, 495, 8249, 520, 4514, 106, 2346, 224 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,2`
	EXAMPLE	`If n is prime, then a(n)=2n.`
	CROSSREFS	`Cf. A000203, A000010, A051612, A065387, A077099-A077101.` `Sequence in context: A034923 A013022 A012908 * A012935 A013166 A174653` `Adjacent sequences: A077097 A077098 A077099 * A077101 A077102 A077103`
	KEYWORD	`nonn`
	AUTHOR	`Labos E. (labos(AT)ana.sote.hu), Nov 06 2002`
	EXTENSIONS	`Edited by Dean Hickerson (dean.hickerson(AT)yahoo.com), Nov 07 2002`

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Last modified February 16 16:00 EST 2012. Contains 205938 sequences.