id:A079872 - OEIS Search Results

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signum(round(n^(1/Omega(n)))^Omega(n) - n), where Omega(n) is the total number of prime factors of n (A001222).

+0
3

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

	OFFSET	`1,1`
	COMMENT	`a(m) = 0 iff m is a prime power (A000961).`
	CROSSREFS	`a(n)=A057427(A079869(n) - n).` `Sequence in context: A028862 A011673 A104853 this_sequence A143731 A011672 A144194` `Adjacent sequences: A079869 A079870 A079871 this_sequence A079873 A079874 A079875`
	KEYWORD	`sign`
	AUTHOR	`Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Jan 13 2003`

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Last modified November 29 12:46 EST 2009. Contains 167659 sequences.

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