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A027755
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Primes of form n^2 + n + 5.
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4
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5, 7, 11, 17, 47, 61, 137, 277, 311, 347, 467, 557, 761, 997, 1061, 1487, 1811, 2357, 2657, 3911, 4561, 5261, 5407, 5857, 6011, 6977, 7487, 8377, 8747, 9511, 11777, 12437, 13577, 14767, 16007, 17827, 18637, 18911, 21467, 23567, 25127
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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COMMENTS
| a(5) through a(14) are identical to the first 10 values of q, the left-hand column of "Example 2.3. We give examples of maximal and minimal elliptic curves over finite fields over F_q with discriminant -19 for all q < 1000.", p.4, and "Example 5.2. We produce examples of optimal curves over finite fields with discriminant -19." pp.10-11 of E. Alekseenko, et al. [From Jonathan Vos Post (jvospost3(AT)gmail.com), Feb 12 2009]
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LINKS
| P. De Geest, World!Of Numbers
E. Alekseenko, S. Aleshnikov, N. Markin and A. Zaytsev, Optimal Curves of Genus 3 over Finite Fields with Discriminant -19, Feb 11, 2009. [From Jonathan Vos Post (jvospost3(AT)gmail.com), Feb 12 2009]
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PROG
| (MAGMA)[a: n in [0..250]|IsPrime(a) where a is n^2+n+5][From Vincenzo Librandi, Dec 20 2010]
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CROSSREFS
| Sequence in context: A023241 A174357 A106954 * A089785 A118386 A116641
Adjacent sequences: A027752 A027753 A027754 * A027756 A027757 A027758
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KEYWORD
| nonn
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AUTHOR
| Patrick De Geest (pdg(AT)worldofnumbers.com)
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