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A259849
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Average of consecutive pairs of perfect numbers.
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1
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OFFSET
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1,1
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COMMENTS
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Assuming that no odd perfect number exists.
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LINKS
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FORMULA
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a(n) = (A000396(n)+A000396(n+1))/2, assuming there are no odd perfect numbers.
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EXAMPLE
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a(1) = (6 + 28)/2 = 17.
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MAPLE
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perf:= n -> numtheory:-mersenne([n])*(numtheory:-mersenne([n])+1)/2:
seq((perf(n)+perf(n+1))/2, n=1..15); # Robert Israel, Aug 20 2015
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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