id:A049808 - OEIS Search Results

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a(n)=number of Farey fractions of order n that are <=1/4; cf. A049805.

+0
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1, 1, 1, 2, 3, 4, 5, 6, 8, 9, 11, 12, 15, 17, 19, 21, 25, 26, 30, 32, 36, 39, 44, 46, 51, 54, 58, 61, 68, 70, 77, 81, 87, 91, 97, 100, 109, 114, 120, 124, 134, 136, 146, 151, 157, 163, 174, 178, 189, 194, 202, 208, 221, 226, 236, 242 (list; graph; listen)

	OFFSET	`1,4`
	CROSSREFS	`Sequence in context: A033102 A030749 A030789 this_sequence A050418 A011869 A134030` `Adjacent sequences: A049805 A049806 A049807 this_sequence A049809 A049810 A049811`
	KEYWORD	`nonn`
	AUTHOR	`Clark Kimberling (ck6(AT)evansville.edu)`

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Last modified December 4 15:11 EST 2009. Contains 170347 sequences.

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