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A069120
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Integers of the form k!*sum(i=1..k, 1/(i*2^i) ).
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2
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OFFSET
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1,1
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LINKS
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EXAMPLE
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4 is in the sequence because for k = 3, 3!*(1/1/2^1 + 1/2/2^2 + 1/3/2^3) = 4 is an integer. - Robert Israel, May 18 2014
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MAPLE
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select(type, [seq](k!*add(1/i/2^i, i=1..k), k=1..100), integer); # Robert Israel, May 18 2014
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CROSSREFS
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KEYWORD
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easy,nonn
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AUTHOR
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STATUS
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approved
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