id:A039655 - OEIS Search Results

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Number of iterations of f(x) = sigma(x)-1 on n required to reach a prime.

+0
2

0, 0, 2, 0, 1, 0, 2, 5, 1, 0, 4, 0, 1, 1, 2, 0, 2, 0, 1, 1, 2, 0, 1, 2, 1, 3, 2, 0, 1, 0, 5, 1, 1, 1, 2, 0, 1, 2, 1, 0, 4, 0, 1, 5, 1, 0, 2, 4, 2, 1, 1, 0, 3, 1, 3, 1, 1, 0, 1, 0, 4, 1, 2, 1, 2, 0, 3, 4, 2, 0, 2, 0, 1, 2, 1, 4, 1, 0, 2, 2, 3, 0, 1, 1, 1, 3, 1, 0, 1, 2, 1, 1, 2, 3, 1, 0, 3, 2, 2, 0, 2, 0, 2, 1, 2 (list; graph; listen)

	OFFSET	`2,3`
	CROSSREFS	`Cf. A039649-A039656.` `Sequence in context: A030010 A163577 A132178 this_sequence A103775 A093057 A065334` `Adjacent sequences: A039652 A039653 A039654 this_sequence A039656 A039657 A039658`
	KEYWORD	`nonn`
	AUTHOR	`David W. Wilson (davidwwilson(AT)comcast.net)`

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Last modified November 30 13:13 EST 2009. Contains 167758 sequences.

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