id:A074778 - OEIS Search Results

Search: id:A074778

Displaying 1-1 of 1 results found.

page 1

Numbers n such that 2^n+1 and F(n) are not relatively prime, where F(n) denotes the n-th Fibonacci number.

+0
1

10, 14, 30, 36, 42, 50, 54, 70, 74, 90, 98, 100, 108, 110, 114, 126, 130, 134, 150, 154, 162, 170, 174, 178, 180, 182, 190, 192, 194, 202, 210, 222, 230, 238, 250, 252, 254, 266, 270, 290, 294, 300, 310, 322, 324, 330, 340, 342, 350, 352, 354, 370, 378, 390 (list; graph; listen)

	OFFSET	`1,1`
	FORMULA	`a(n) seems to be asymptotic to c*n with c=5.8...`
	CROSSREFS	`Sequence in context: A053690 A031028 A115603 this_sequence A115391 A116955 A107126` `Adjacent sequences: A074775 A074776 A074777 this_sequence A074779 A074780 A074781`
	KEYWORD	`nonn`
	AUTHOR	`Benoit Cloitre (benoit7848c(AT)orange.fr), Sep 07 2002`

page 1

Search completed in 0.002 seconds

Last modified August 19 23:53 EDT 2008. Contains 142930 sequences.

AT&T Labs Research