A072892 - OEIS

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A072892

The 4-cycle of the n => sigma(n)-n process. sigma(n) is the sum of divisors of n. (A000203) a(4+n)=a(n).

1264460, 1547860, 1727636, 1305184, 1264460 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`1,1`
	LINKS	`Table of n, a(n) for n=1..5.`
	CROSSREFS	`Cf. A000203, A045477.` `Sequence in context: A126174 A186089 A208489 * A090615 A222975 A180624` `Adjacent sequences: A072889 A072890 A072891 * A072893 A072894 A072895`
	KEYWORD	`fini,full,nonn`
	AUTHOR	`Miklos Kristof, Jul 29 2002`
	STATUS	`approved`

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Last modified May 23 12:14 EDT 2013. Contains 225587 sequences.