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A102870
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Primes of the form 3^n+8.
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0
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11, 17, 89, 251, 6569, 1594331, 4782977, 3486784409, 1350851717672992097, 984770902183611232889, 5474401089420219382077155933569751771, 969773729787523602876821942164080815560169
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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COMMENTS
| These primes appears to be more frequent than 2^n+1 (Mersenne) primes.
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FORMULA
| a(m) = if[ 3^n+8 is prime then a[m]=3^n+8, for n=1 to 200]
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MATHEMATICA
| a = Delete[Union[Flatten[Table[If [PrimeQ[3^n + 8] == True, 3^n + 8, 0], {n, 1, 200}]]], 1]
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CROSSREFS
| Sequence in context: A191456 A146036 A046122 * A136721 A107172 A090286
Adjacent sequences: A102867 A102868 A102869 * A102871 A102872 A102873
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KEYWORD
| nonn
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AUTHOR
| Roger Lee Bagula (rlbagulatftn(AT)yahoo.com), Mar 01 2005
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