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Search: id:A003068
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| A003068 |
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Problimes (third definition).
(Formerly M1038)
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+0
4
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| 2, 4, 7, 11, 15, 19, 23, 28, 33, 38, 43, 48, 53, 58, 63, 68, 73, 79, 85, 91, 97, 103, 109, 115, 121, 127, 133, 139, 145, 151, 157, 163, 169, 175, 181, 187, 193, 199, 205, 211, 217, 224, 231, 238, 245, 252, 259, 266, 273, 280, 287, 294, 301, 308, 315, 322, 329
(list; graph; listen)
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OFFSET
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1,1
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REFERENCES
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N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
M. D. Hirschhorn, How unexpected is the prime number theorem?, Amer. Math. Monthly, 80 (1973), 675-677.
R. C. Vaughan, The problime number theorem, Bull. London Math. Soc., 6 (1974), 337-340.
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LINKS
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T. D. Noe, Table of n, a(n) for n=1..1000
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MAPLE
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a[1] := 2: for i from 1 to 150 do a[i+1] := ceil(a[i]+1/product((1-1/a[j]), j=1..i)): od:
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CROSSREFS
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Cf. A003066, A003067.
Sequence in context: A018385 A087163 A062467 this_sequence A078617 A025703 A025709
Adjacent sequences: A003065 A003066 A003067 this_sequence A003069 A003070 A003071
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KEYWORD
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nonn,nice
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AUTHOR
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N. J. A. Sloane (njas(AT)research.att.com).
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EXTENSIONS
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More terms and Maple code from James A. Sellers (sellersj(AT)math.psu.edu), Mar 07 2000
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