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A152099
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a(n) = (2^prime(n) - 1)*(2^prime(n) + 1) = 2^(2*prime(n)) - 1.
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3
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15, 63, 1023, 16383, 4194303, 67108863, 17179869183, 274877906943, 70368744177663, 288230376151711743, 4611686018427387903, 18889465931478580854783, 4835703278458516698824703, 77371252455336267181195263, 19807040628566084398385987583
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OFFSET
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1,1
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COMMENTS
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LINKS
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FORMULA
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MATHEMATICA
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Table[(2^Prime[n] - 1)*(2^Prime[n] + 1), {n, 1, 20}]
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PROG
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(Python)
from sympy import prime
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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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