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A060264
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First prime after 2n.
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19
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2, 3, 5, 7, 11, 11, 13, 17, 17, 19, 23, 23, 29, 29, 29, 31, 37, 37, 37, 41, 41, 43, 47, 47, 53, 53, 53, 59, 59, 59, 61, 67, 67, 67, 71, 71, 73, 79, 79, 79, 83, 83, 89, 89, 89, 97, 97, 97, 97, 101, 101, 103, 107, 107, 109, 113, 113, 127, 127, 127, 127, 127, 127, 127, 131
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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0,1
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COMMENTS
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Conjecture: for n > 2, this is the least prime p such that 1^2, 2^2, 3^2, ..., n^2 are distinct mod p. Checked to 10^4. - Charles R Greathouse IV, Dec 03 2022
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LINKS
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FORMULA
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MAPLE
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nextprime(2*n) ;
end proc:
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MATHEMATICA
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PROG
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(PARI) for (n=0, 1000, write("b060264.txt", n, " ", nextprime(2*n + 1))) \\ Harry J. Smith, Jul 03 2009
(Haskell)
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CROSSREFS
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KEYWORD
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nonn,easy
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AUTHOR
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STATUS
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approved
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