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A051439
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a(n) = prime(2^n + 1).
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10
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3, 5, 11, 23, 59, 137, 313, 727, 1621, 3673, 8167, 17881, 38891, 84047, 180511, 386117, 821647, 1742539, 3681149, 7754081, 16290073, 34136059, 71378603, 148948141, 310248251, 645155227, 1339484207, 2777105131, 5750079077
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OFFSET
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0,1
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LINKS
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EXAMPLE
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a(0) = prime(2^0+1) = prime(2) = 3,
a(1) = prime(2+1) = prime(3) = 5,
a(2) = prime(2^2+1) = prime(5) = 11,
a(3) = prime(2^3+1) = prime(9) = 23, and so on. - N. J. A. Sloane, Dec 09 2020
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MATHEMATICA
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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EXTENSIONS
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More terms from Michael Lugo (mlugo(AT)thelabelguy.com), Dec 22 1999
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STATUS
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approved
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