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A299799
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Carmichael numbers (A002997) that are Chebyshev pseudoprimes (A175530).
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2
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443372888629441, 582920080863121, 39671149333495681, 842526563598720001, 2380296518909971201, 3188618003602886401, 33711266676317630401, 54764632857801026161, 122762671289519184001, 361266866679292635601, 4208895375600667752001, 7673096805497432749441
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OFFSET
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1,1
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COMMENTS
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Odd composite integer n is in this sequence if n == 1 or p (mod (p^2-1)/2) for every prime p|n.
No other terms below 10^22.
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LINKS
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CROSSREFS
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KEYWORD
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nonn,hard,more,changed
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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