id:A105971 - OEIS Search Results

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Number of distinct prime divisors of 66...667 (with n 6's).

+0
1

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

	OFFSET	`0,2`
	EXAMPLE	`The number of distinct prime divisors of 67 is 1 (prime).` `The number of distinct prime divisors of 667 is 2.` `The number of distinct prime divisors of 6667 is 2.`
	CROSSREFS	`Cf. A104889, A104524.` `Sequence in context: A129320 A096831 A034095 this_sequence A080354 A024935 A137921` `Adjacent sequences: A105968 A105969 A105970 this_sequence A105972 A105973 A105974`
	KEYWORD	`nonn,base`
	AUTHOR	`Parthasarathy Nambi (PachaNambi(AT)yahoo.com), Apr 28 2005`

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.