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A309856
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Primes of the form 2*p^3+1 where p is also prime.
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2
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17, 251, 2663, 48779, 410759, 715823, 2450087, 6615899, 13935743, 15290747, 23394167, 38930219, 160125983, 219804479, 236741543, 1258845587, 1666475243, 2116179719, 2308641299, 3604970627, 3991233959, 4283401139, 6109873703, 8207369603, 8487319319, 9264815927
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OFFSET
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1,1
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COMMENTS
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All terms == 5 (mod 6).
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LINKS
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FORMULA
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MAPLE
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f:= proc(n) if isprime(n) and isprime(2*n^3+1) then return 2*n^3+1 fi end proc:
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MATHEMATICA
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pp = Join[{2}, Select[Range[5, 10000, 6], PrimeQ[#] && PrimeQ[2#^3 + 1]&]];
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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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