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A243958
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Primes of the form 2*n^2+86*n+41.
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2
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317, 521, 857, 977, 1229, 1361, 1637, 2081, 2237, 2729, 3257, 3821, 4217, 4421, 5501, 6197, 8501, 9341, 9629, 12401, 13397, 14081, 15137, 15497, 16229, 18521, 18917, 20129, 21377, 22229, 23537, 23981, 26261, 26729, 29129, 31121, 32141, 35837, 36929, 39161
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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 + 86 n + 41, {n, 800}], PrimeQ]
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PROG
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(Magma) [a: n in [1..300] | IsPrime(a) where a is 2*n^2+86*n+41];
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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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