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A065524
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The (5^n)-th composite number.
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0
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4, 10, 38, 164, 760, 3634, 17653, 86542, 426510, 2109602, 10458654, 51938515, 258246036, 1285227649, 6400837884, 31896080698, 159013169263, 793026358830, 3956152086139, 19740921224246, 98526658283206, 491833651069513, 2455555405866035, 12261373736046802
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listen;
history;
text;
internal format)
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OFFSET
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0,1
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LINKS
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MATHEMATICA
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Composite[n_Integer] := Block[ {k = n + PrimePi[n] + 1 }, While[ k != n + PrimePi[k] + 1, k = n + PrimePi[k] + 1]; Return[ k ]]; Table[ Composite[5^n], {n, 0, 18} ]
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CROSSREFS
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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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