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A023310
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Numbers n such that n remains prime through 4 iterations of function f(x) = 3x + 10.
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0
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3, 199, 233, 709, 1361, 1367, 2137, 2879, 5519, 5987, 7283, 9719, 11699, 14983, 16417, 17881, 20939, 24481, 30467, 31663, 31741, 35107, 35863, 46811, 47869, 49261, 58207, 60497, 63317, 64781, 68777, 73453, 74021, 79901, 85487, 85571, 94327, 94999
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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COMMENTS
| n, 3*n+10, 9*n+40, 27*n+130 and 81*n+400 are primes. [From Vincenzo Librandi (vincenzo.librandi(AT)tin.it), Aug 04 2010]
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PROG
| (MAGMA) [n: n in [1..1000000] | IsPrime(n) and IsPrime(3*n+10) and IsPrime(9*n+40) and IsPrime(27*n+130) and IsPrime(81*n+400)] [From Vincenzo Librandi (vincenzo.librandi(AT)tin.it), Aug 04 2010]
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CROSSREFS
| Sequence in context: A000724 A157565 A157598 * A054701 A140654 A080297
Adjacent sequences: A023307 A023308 A023309 * A023311 A023312 A023313
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KEYWORD
| nonn
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AUTHOR
| David W. Wilson (davidwwilson(AT)comcast.net)
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