id:A112045 - OEIS Search Results

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A112045

Position of primes (A000040) among square-free numbers A000037.

+0
1

1, 2, 3, 5, 8, 10, 13, 15, 19, 24, 26, 31, 35, 37, 41, 46, 52, 54, 59, 63, 65, 71, 74, 80, 88, 91, 93, 97, 99, 103, 116, 120, 126, 128, 137, 139, 145, 151, 155, 160, 166, 168, 178, 180, 183, 185, 197, 209, 212, 214, 218, 224, 226, 236, 241, 247, 253, 255, 261 (list; graph; listen)

	OFFSET	`1,2`
	MATHEMATICA	`f[n_]:=n-IntegerPart[Sqrt[n]]; lst={}; Do[p=Prime[n]; AppendTo[lst, f[p]], {n, 5!}]; lst [From Vladimir Orlovsky (4vladimir(AT)gmail.com), Jul 24 2009]`
	CROSSREFS	`a(n) = A028391(A000040(n)).` `Sequence in context: A085833 A066896 A098177 this_sequence A098389 A004977 A094568` `Adjacent sequences: A112042 A112043 A112044 this_sequence A112046 A112047 A112048`
	KEYWORD	`nonn`
	AUTHOR	`Antti Karttunen (His-Firstname.His-Surname(AT)iki.fi), Aug 27 2005`

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Last modified December 11 12:57 EST 2009. Contains 170656 sequences.

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