id:A129251 - OEIS Search Results

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Number of distinct prime factors p of n such that p^p is a divisor of n.

+0
9

0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 1, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 1, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 1, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0 (list; graph; listen)

	OFFSET	`1,1`
	COMMENT	`a(A048103(n)) = 0, a(A100716(n)) > 0;.`
	LINKS	`R. Zumkeller, Table of n, a(n) for n = 1..10000`
	CROSSREFS	`Cf. A129252, A001221, A051674.` `Sequence in context: A157228 A105563 A011765 this_sequence A144602 A160351 A023969` `Adjacent sequences: A129248 A129249 A129250 this_sequence A129252 A129253 A129254`
	KEYWORD	`nonn`
	AUTHOR	`Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Apr 07 2007`

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Last modified November 27 22:38 EST 2009. Contains 167602 sequences.

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