A089910 - OEIS

This site is supported by donations to The OEIS Foundation.

A089910

Indices n at which blocks (1;1) occur in infinite Fibonacci word; i.e. such that A005614(n)=A005614(n+1)=1.

4, 9, 12, 17, 22, 25, 30, 33, 38, 43, 46, 51, 56, 59, 64, 67, 72, 77, 80, 85, 88, 93, 98, 101, 106, 111, 114, 119, 122, 127, 132, 135, 140, 145, 148, 153, 156, 161, 166, 169, 174, 177, 182, 187, 190, 195, 200, 203, 208, 211, 216, 221, 224, 229, 232, 237, 242, 245 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,1`
	FORMULA	`a(n)=floor((2+sqrt(5))n)+0 or 1; floor(n(2+sqrt(5)))+b(a(n))-a(n)=0 where b(x) = A078588(x)=x+1+ceil(xsqrt(5))-2ceil(x*(1+sqrt(5))/2)`
	CROSSREFS	`Cf. A001950, A026352.` `Sequence in context: A034018 A047461 A190448 * A177880 A059269 A081619` `Adjacent sequences: A089907 A089908 A089909 * A089911 A089912 A089913`
	KEYWORD	`nonn`
	AUTHOR	`Benoit Cloitre (benoit7848c(AT)orange.fr), Nov 15 2003`

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

Last modified February 15 21:56 EST 2012. Contains 205860 sequences.