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Search: id:A137415
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| A137415 |
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n for the first time IntegerPart[Sqrt[Prime[n]]] - PrimePi[n] == 1 - m for the first 20 m's, starting at m=0: n such that A000006[n]-A0000720[n]=1-m. |
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+0
1
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| 1, 2, 43, 61, 83, 103, 109, 113, 151, 167, 179, 181, 197, 199, 233, 239, 251, 263, 271, 281, 283
(list; graph; listen)
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OFFSET
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1,2
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FORMULA
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a(m)=If[IntegerPart[Sqrt[Prime[n]]] - PrimePi[n] == 1 - m,n]
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MATHEMATICA
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Table[Min[Flatten[Table[If[IntegerPart[Sqrt[Prime[n]]] - PrimePi[n] == 1 - m, n, {}], {n, 1, 500}]]], {m, 0, 20}]
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CROSSREFS
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Cf. A000006, A000720.
Sequence in context: A069544 A085460 A139835 this_sequence A090194 A107200 A079823
Adjacent sequences: A137412 A137413 A137414 this_sequence A137416 A137417 A137418
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KEYWORD
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nonn,uned,obsc
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AUTHOR
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Roger L. Bagula (rlbagulatftn(AT)yahoo.com), Apr 21 2008
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EXTENSIONS
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Definition not clear. - N. J. A. Sloane (njas(AT)research.att.com), Apr 25 2008
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