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A137389
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a(n) = 2^prime(n) + 2^prime(n+1).
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2
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12, 40, 160, 2176, 10240, 139264, 655360, 8912896, 545259520, 2684354560, 139586437120, 2336462209024, 10995116277760, 149533581377536, 9147936743096320, 585467951558164480, 2882303761517117440, 149879795598890106880, 2508757194024499019776, 11805916207174113034240
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OFFSET
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1,1
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LINKS
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FORMULA
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EXAMPLE
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a(3) = 160 because 2^5 + 2^7 = 160.
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MAPLE
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MATHEMATICA
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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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EXTENSIONS
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STATUS
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approved
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