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A139496
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Primes of the form x^2 + 13x*y + y^2 for x and y nonnegative.
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1
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31, 181, 199, 229, 331, 379, 421, 499, 619, 631, 661, 691, 709, 751, 829, 859, 991, 1021, 1039, 1171, 1279, 1291, 1321, 1489, 1549, 1609, 1621, 1699, 1741, 1831, 1879, 1951, 2011, 2029, 2161, 2179, 2269, 2281, 2311, 2341, 2539, 2671, 2689, 2731, 2971
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OFFSET
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1,1
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LINKS
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MATHEMATICA
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a = {}; w = 13; k = 1; Do[Do[If[PrimeQ[n^2 + w*n*m + k*m^2], AppendTo[a, n^2 + w*n*m + k*m^2]], {n, m, 400}], {m, 1, 400}]; Union[a] (*Artur Jasinski*)
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CROSSREFS
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Cf. A139489, A007645, A068228, A007519, A033212, A033212, A107152, A107008, A033215, A107145, A139490, A139491.
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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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