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A138242
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Prime numbers n such that 12*n - 1, 12*n + 1 are twin primes.
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0
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5, 19, 29, 139, 149, 271, 281, 379, 569, 601, 691, 719, 751, 839, 1009, 1021, 1051, 1499, 1511, 1601, 1619, 1709, 1801, 2161, 2381, 2539, 2711, 2819, 2851, 3001, 3109, 3221, 3229, 3319, 3449, 3929, 4111, 4129, 4139, 4241, 4261, 4339, 4871, 4909, 4969
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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EXAMPLE
| 5*12=60-1=59 prime, 5*12=60+1=61 prime
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MATHEMATICA
| a=12; Select[Prime[Range[250]], PrimeQ[a*#-1]&&PrimeQ[a*#+1] &]
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PROG
| (MAGMA) [n: n in [0..1000] |IsPrime(n) and IsPrime(12*n-1)and IsPrime(12*n+1)] [From Vincenzo Librandi, Nov 24 2010]
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CROSSREFS
| Sequence in context: A115103 A045457 A165557 * A163076 A122729 A031019
Adjacent sequences: A138239 A138240 A138241 * A138243 A138244 A138245
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KEYWORD
| nonn
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AUTHOR
| Vladimir Orlovsky (4vladimir(AT)gmail.com), May 05 2008
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EXTENSIONS
| More terms from Vincenzo Librandi (vincenzo.librandi(AT)tin.it), Mar 25 2010
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