A112045 - OEIS

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A112045

Position of primes (A000040) among squarefree numbers A000037.

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; refs; listen; history; internal format)

	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: A066896 A098177 A193640 * A098389 A004977 A186498` `Adjacent sequences: A112042 A112043 A112044 * A112046 A112047 A112048`
	KEYWORD	`nonn`
	AUTHOR	`Antti Karttunen (His-Firstname.His-Surname(AT)iki.fi), Aug 27 2005`

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Last modified February 16 03:44 EST 2012. Contains 205860 sequences.