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A139232
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Second differences of Mersenne primes A000668.
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11
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20, 72, 7968, 114816, 270336, 2146566144, 2305843004919250944, 618970015031004121169657856, 162258038889176383854312324857856, 170140858942534543324603210697313091584
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internal format)
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OFFSET
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1,1
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COMMENTS
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Second differences of even superperfect numbers, multiplied by 2 (see A139236).
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LINKS
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FORMULA
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MATHEMATICA
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Differences[2^MersennePrimeExponent[Range[14]]-1, 2] (* Paolo Xausa, Oct 20 2023 *)
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CROSSREFS
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Cf. A000668, A019279, A061652, A139228, A139229, A139230, A139231, A139233, A139234, A139235, A139236, A139237.
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KEYWORD
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nonn
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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