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A243890
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Primes of the form 2*n^2+38*n+17.
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2
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101, 149, 257, 317, 449, 521, 677, 761, 941, 1697, 1949, 2081, 2357, 2801, 2957, 3449, 3797, 4349, 4937, 6221, 6449, 6917, 7649, 7901, 8681, 9221, 9497, 10061, 10937, 12161, 13121, 13781, 15149, 16217, 17321, 18077, 18461, 20441, 20849, 25601, 26981, 27449
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OFFSET
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1,1
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COMMENTS
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Conjecture: except 521, 2^a(n)-1 is not prime; in other words, these primes are included in A054723.
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LINKS
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MATHEMATICA
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Select[Table[2 n^2 + 38 n + 17, {n, 800}], PrimeQ]
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PROG
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(Magma) [a: n in [1..200] | IsPrime(a) where a is 2*n^2+38*n+17];
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CROSSREFS
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Cf. similar sequences listed in A243888.
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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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