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A070969
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a(n) = 2^(2^n + 1) + 1.
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5
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5, 9, 33, 513, 131073, 8589934593, 36893488147419103233, 680564733841876926926749214863536422913, 231584178474632390847141970017375815706539969331281128078915168015826259279873
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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)=5 because 2^(2^0 + 1) + 1 = 2^(1 + 1) + 1 = 2^2 + 1 = 4 + 1 = 5.
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MATHEMATICA
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PROG
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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Anonymous, May 17 2002
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EXTENSIONS
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STATUS
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approved
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