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A083558
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p(p^2-p+1) as p runs through the primes.
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3
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6, 21, 105, 301, 1221, 2041, 4641, 6517, 11661, 23577, 28861, 49321, 67281, 77701, 101661, 146121, 201957, 223321, 296341, 352941, 383761, 486877, 564981, 697137, 903361, 1020201, 1082221, 1213701, 1283257, 1430241, 2032381, 2231061, 2552721, 2666437
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OFFSET
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1,1
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COMMENTS
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Warning: not all quizzes permit the use of the OEIS!
Discard (from the list of integers) numbers that have exactly 1 factor of prime(n) in their prime factorization. Of those remaining, the proportion that have exactly 2 factors of prime(n) is (prime(n)-1)/a(n). - Peter Munn, Nov 27 2020
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LINKS
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FORMULA
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MATHEMATICA
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Table[p(p^2-p+1), {p, Prime[Range[40]]}] (* Harvey P. Dale, Jan 09 2017 *)
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PROG
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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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