id:A097106 - OEIS Search Results

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(Smallest prime power >= n) - (greatest prime power <= n).

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0, 0, 0, 0, 0, 2, 0, 0, 0, 2, 0, 2, 0, 3, 3, 0, 0, 2, 0, 4, 4, 4, 0, 2, 0, 2, 0, 2, 0, 2, 0, 0, 5, 5, 5, 5, 0, 4, 4, 4, 0, 2, 0, 4, 4, 4, 0, 2, 0, 4, 4, 4, 0, 6, 6, 6, 6, 6, 0, 2, 0, 3, 3, 0, 3, 3, 0, 4, 4, 4, 0, 2, 0, 6, 6, 6, 6, 6, 0, 2, 0, 2, 0, 6, 6, 6, 6, 6, 0, 8, 8, 8, 8, 8, 8, 8, 0, 4, 4, 4, 0, 2, 0, 4, 4 (list; graph; listen)

	OFFSET	`1,6`
	COMMENT	`a(n) = A000015(n) - A031218(n);` `a(n) = 0 iff n is a prime power.`
	CROSSREFS	`Cf. A000961, A072680.` `Sequence in context: A112313 A087893 A079169 this_sequence A165619 A088886 A137347` `Adjacent sequences: A097103 A097104 A097105 this_sequence A097107 A097108 A097109`
	KEYWORD	`nonn`
	AUTHOR	`Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Sep 15 2004`

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Last modified December 6 13:45 EST 2009. Contains 170429 sequences.

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