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A177077
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Primes of the form 5*x^2 - 2*y^2, where x and y are successive natural numbers.
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1
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2, 13, 53, 317, 613, 797, 1237, 1493, 3533, 4877, 12413, 16573, 17477, 20333, 26693, 30197, 32653, 37853, 40597, 44893, 50957, 54133, 59077, 60773, 64237, 71453, 81013, 82997, 87037, 99733, 108677, 115637, 120397, 127717, 145637, 159157
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OFFSET
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1,1
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COMMENTS
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a(n) is congruent 1 mod 4.
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LINKS
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MAPLE
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select(isprime, [seq(3*n^2-4*n-2, n=2..1000)]); # Robert Israel, Aug 14 2018
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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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