id:A061853 - OEIS Search Results

Search: id:A061853

Displaying 1-1 of 1 results found.

page 1

Difference between smallest number coprime to n and smallest non-divisor of n.

+0
2

0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 3, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 3, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0 (list; graph; listen)

	OFFSET	`1,30`
	COMMENT	`a(12m+6) is always positive since it involves subtracting 4 from a larger number; the first case where a term not of this form is positive is a(420).`
	FORMULA	`a(n) =A053669(n)-A007978(n).`
	EXAMPLE	`a(29)=2-2=0; a(30)=7-4=3; a(420)=11-8=3.`
	CROSSREFS	`Sequence in context: A100267 A160540 A045840 this_sequence A010104 A030121 A062535` `Adjacent sequences: A061850 A061851 A061852 this_sequence A061854 A061855 A061856`
	KEYWORD	`nonn`
	AUTHOR	`Henry Bottomley (se16(AT)btinternet.com), May 10 2001`

page 1

Search completed in 0.002 seconds

Last modified December 16 17:18 EST 2009. Contains 170825 sequences.

AT&T Labs Research