A079872 - OEIS

This site is supported by donations to The OEIS Foundation.

A079872

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

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; refs; listen; history; internal format)

	OFFSET	`1,1`
	COMMENTS	`a(m) = 0 iff m is a prime power (A000961).`
	CROSSREFS	`a(n)=A057427(A079869(n) - n).` `Sequence in context: A028862 A011673 A104853 * A143731 A169672 A011672` `Adjacent sequences: A079869 A079870 A079871 * A079873 A079874 A079875`
	KEYWORD	`sign`
	AUTHOR	`Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Jan 13 2003`

Content is available under The OEIS End-User License Agreement .

Last modified February 16 01:31 EST 2012. Contains 205860 sequences.