id:A075802 - OEIS Search Results

Search: id:A075802

Displaying 1-1 of 1 results found.

page 1

Characteristic function of perfect powers, A001597.

+0
4

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

	OFFSET	`1,1`
	COMMENT	`a(n) = A057427(A052409(n) - 1);` `a(A001597(n))=1 and a(m)=0 for all m that are not perfect powers.` `Not multiplicative: for example, a(8)=a(9)=1, but a(72)=0. - Franklin T. Adams-Watters, Sep 09 2005`
	LINKS	`Index entries for characteristic functions` `Eric Weisstein's World of Mathematics, Perfect Powers.`
	CROSSREFS	`Cf. A112526.` `Sequence in context: A014504 A014999 A065803 this_sequence A112526 A120523 A119498` `Adjacent sequences: A075799 A075800 A075801 this_sequence A075803 A075804 A075805`
	KEYWORD	`nonn`
	AUTHOR	`Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Oct 13 2002`

page 1

Search completed in 0.002 seconds

Last modified December 20 00:58 EST 2009. Contains 171054 sequences.

AT&T Labs Research