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A031368
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Odd-indexed primes: a(n) = prime(2n-1).
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45
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2, 5, 11, 17, 23, 31, 41, 47, 59, 67, 73, 83, 97, 103, 109, 127, 137, 149, 157, 167, 179, 191, 197, 211, 227, 233, 241, 257, 269, 277, 283, 307, 313, 331, 347, 353, 367, 379, 389, 401, 419, 431, 439, 449, 461, 467, 487, 499, 509, 523, 547, 563
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OFFSET
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1,1
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COMMENTS
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Appeared as a puzzle in "Stickelers", a nationally distributed feature, by Terry Stickels, Sep 28 2006. - Franklin T. Adams-Watters, Sep 28 2006
Also every second prime starting with 2. - Cino Hilliard, Dec 02 2007
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LINKS
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FORMULA
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MAPLE
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MATHEMATICA
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PROG
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(Haskell)
a031368 = a000040 . ((subtract 1) . (* 2))
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CROSSREFS
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KEYWORD
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nonn,easy
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AUTHOR
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STATUS
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approved
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