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; internal format)

	OFFSET	`1,1`
	CROSSREFS	`Cf. A000203, A045477.` `Sequence in context: A206019 A126174 A186089 * A090615 A180624 A081430` `Adjacent sequences: A072889 A072890 A072891 * A072893 A072894 A072895`
	KEYWORD	`fini,full,nonn`
	AUTHOR	`Miklos Kristof (kristmikl(AT)freemail.hu), Jul 29 2002`

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Last modified February 14 20:13 EST 2012. Contains 205663 sequences.