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A100930
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Semiprimes of the form (2*p+1)*(p-1)/2, p prime.
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2
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22, 115, 517, 6847, 31951, 128701, 516601, 1037851, 2070001, 4156501, 4254937, 6045451, 7945351, 8425957, 8777887, 9137017, 13124317, 14278951, 14460907, 14920837, 24194101, 29146501, 31795501, 47592751, 48758797, 50108701
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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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Eric Weisstein's World of Mathematics, Semiprime
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MATHEMATICA
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Select[Table[((2p+1)(p-1))/2, {p, Prime[Range[2000]]}], PrimeOmega[#]==2&] (* Harvey P. Dale, Apr 13 2020 *)
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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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