A105080 - OEIS

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A105080

Number of distinct prime divisors of 10000^n - 3.

2, 2, 2, 4, 4, 2, 3, 4, 4, 5, 4, 5, 4, 4, 4, 4, 5, 3, 5, 4, 5, 3, 4, 8, 4, 3, 6, 5, 5, 3, 7, 5, 3, 5, 1, 4, 6, 5 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,1`
	LINKS	`Makoto Kamada, Factorizations of 999...997.`
	FORMULA	`A105080(n) = A105068(4n) = A105069(2n). - Robert G. Wilson v (rgwv(AT)rgwv.com), Apr 08 2005`
	EXAMPLE	`The number of distinct prime divisors of 10000^1 - 3 is 2, so the first term is 2.`
	CROSSREFS	`Cf. A089675, A105068, A105069.` `Sequence in context: A179651 A139560 A192095 * A206424 A117728 A172309` `Adjacent sequences: A105077 A105078 A105079 * A105081 A105082 A105083`
	KEYWORD	`nonn`
	AUTHOR	`Parthasarathy Nambi (PachaNambi(AT)yahoo.com), Apr 06 2005`
	EXTENSIONS	`More terms from Robert G. Wilson v (rgwv(AT)rgwv.com), Apr 08 2005`

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Last modified February 15 04:23 EST 2012. Contains 205694 sequences.