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2, 6, 14, 62, 254, 1022, 16382, 262142, 1048574, 4294967294, 4611686018427387902, 295147905179352825854, 1237940039285380274899124222, 324518553658426726783156020576254, 340282366920938463463374607431768211454, 348449143727040986586495598010130648530942
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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1,1
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COMMENTS
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Even numbers k such that for every prime factor p of k we have gpf(k+p) = p, gpf = A006530.
Even numbers k such that for every prime factor p of k, k+p is p-smooth.
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LINKS
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FORMULA
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EXAMPLE
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PROG
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(PARI) lista(nn, {lim=256}, {lim_p=1<<32}) = for(n=1, nn, if(isA354531(n, lim, lim_p), print1(2*(2^n-1), ", "))) \\ See A354531 for the function isA354531
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CROSSREFS
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KEYWORD
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nonn,hard
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AUTHOR
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STATUS
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approved
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