id:A103502 - OEIS Search Results

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Floor of Sum_{p prime <= n} (fractional part of n/p).

+0
2

0, 0, 0, 0, 1, 0, 1, 1, 1, 0, 1, 1, 2, 1, 1, 1, 2, 2, 3, 3, 2, 2, 3, 2, 3, 2, 3, 2, 4, 3, 4, 5, 4, 4, 3, 3, 4, 4, 4, 3, 5, 3, 5, 5, 4, 4, 6, 5, 6, 6, 5, 5, 7, 6, 6, 6, 5, 5, 7, 5, 7, 7, 6, 7, 7, 6, 7, 7, 7, 6, 7, 7, 9, 8, 8, 8, 8, 7, 8, 8, 9, 9, 10, 9, 9, 9, 8, 8, 10, 9, 9, 8, 8, 8, 8, 8, 9, 9, 9, 9, 11, 9, 11 (list; graph; listen)

	OFFSET	`0,13`
	EXAMPLE	`a(6)=[{6/2}+{6/3}+{6/5}]=[0+0+1/5]=0.` `a(6)=[{6/2}+{6/3}+{6/5}]=[0+0+1/5]=0.`
	MATHEMATICA	`f[n_] := Floor[Plus @@ FractionalPart[n / Table[Prime[i], {i, PrimePi[ n]}]]]; Table[ f[n], {n, 103}]`
	CROSSREFS	`Sequence in context: A060502 A035439 A059111 this_sequence A127950 A069545 A122520` `Adjacent sequences: A103499 A103500 A103501 this_sequence A103503 A103504 A103505`
	KEYWORD	`nonn`
	AUTHOR	`Carlos Alves (cjsalves(AT)gmail.com), Feb 08 2005`
	EXTENSIONS	`More terms from Robert G. Wilson v (rgwv(AT)rgwv.com), Feb 11 2005`

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Last modified December 10 12:37 EST 2009. Contains 170569 sequences.

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