id:A081835 - OEIS Search Results

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a(1)=1, a(n)=a(n-1)+5 if n is already in the sequence, a(n)=a(n-1)+4 otherwise.

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1, 5, 9, 13, 18, 22, 26, 30, 35, 39, 43, 47, 52, 56, 60, 64, 68, 73, 77, 81, 85, 90, 94, 98, 102, 107, 111, 115, 119, 124, 128, 132, 136, 140, 145, 149, 153, 157, 162, 166, 170, 174, 179, 183, 187, 191, 196, 200, 204, 208, 212, 217, 221, 225, 229, 234, 238, 242 (list; graph; listen)

	OFFSET	`1,2`
	FORMULA	`a(n)=floor(rn-(4r-1)/(r+1)) where r=2+sqrt(5)`
	CROSSREFS	`Cf. A064437.` `Sequence in context: A125018 A074787 A079497 this_sequence A088907 A046586 A023493` `Adjacent sequences: A081832 A081833 A081834 this_sequence A081836 A081837 A081838`
	KEYWORD	`nonn`
	AUTHOR	`Benoit Cloitre (benoit7848c(AT)orange.fr), Apr 11 2003`

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

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