id:A069519 - OEIS Search Results

Search: id:A069519

Displaying 1-1 of 1 results found.

page 1

Sum( d divides n,(-1)^d/d) is an integer.

+0
1

1, 2, 4, 8, 12, 16, 24, 32, 48, 56, 64, 96, 112, 120, 128, 192, 224, 240, 256, 384, 448, 480, 512, 528, 672, 768, 896, 960, 992, 1024, 1056, 1344, 1456, 1536, 1792, 1920, 1984, 2048, 2112, 2160, 2208, 2688, 2912, 3072, 3584, 3840, 3968, 4096, 4224, 4320 (list; graph; listen)

	OFFSET	`1,2`
	FORMULA	`a(1)=1 a(2)=2 for n>2 a(n)=A066192(n-2)`
	CROSSREFS	`Sequence in context: A047836 A070173 A116882 this_sequence A087980 A052184 A046843` `Adjacent sequences: A069516 A069517 A069518 this_sequence A069520 A069521 A069522`
	KEYWORD	`easy,nonn`
	AUTHOR	`Benoit Cloitre (benoit7848c(AT)orange.fr), Apr 16 2002`

page 1

Search completed in 0.002 seconds

Last modified July 25 07:41 EDT 2008. Contains 142293 sequences.

AT&T Labs Research