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A099007
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Primes of the form 6n^2 - 2n - 1.
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0
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3, 19, 47, 139, 367, 467, 839, 1319, 1699, 1907, 3407, 4003, 4987, 6079, 7703, 10499, 11527, 13159, 16747, 17387, 19379, 23687, 25219, 26003, 30103, 32707, 33599, 35419, 38239, 44203, 50599, 53959, 55103, 57427, 62219, 69767, 72379, 76387
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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COMMENTS
| All terms are == 3 (mod 4).
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EXAMPLE
| For n = 2 we have 6*2^2 - 2*2 -1 = 19.
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PROG
| (PARI) for(k=1, 120, if(isprime(p=6*k^2-2*k-1), print1(p, ", ")))
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CROSSREFS
| Cf. A098828.
Sequence in context: A162905 A201875 A063553 * A023280 A054697 A112627
Adjacent sequences: A099004 A099005 A099006 * A099008 A099009 A099010
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KEYWORD
| nonn
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AUTHOR
| Giovanni Teofilatto (g.teofilatto(AT)tiscalinet.it), Nov 07 2004
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EXTENSIONS
| Edited, corrected and extended by Klaus Brockhaus (klaus-brockhaus(AT)t-online.de), Nov 12 2004
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