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A023339
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Numbers n such that n remains prime through 5 iterations of function f(x) = 4x + 3.
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9769, 13781, 17231, 32059, 32611, 36251, 46381, 47417, 55171, 68927, 103451, 130447, 182599, 189671, 220687, 236627, 241169, 273641, 275711, 350219, 374159, 413951, 471769, 497579, 498439, 520631, 521791, 583777, 601061, 635809, 647401
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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COMMENTS
| n, 4*n+3, 16*n+15, 64*n+63, 256*n+255 and 1024*n+1023 are primes. [From Vincenzo Librandi (vincenzo.librandi(AT)tin.it), Aug 05 2010]
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PROG
| (MAGMA) [n: n in [1..10000000] | IsPrime(n) and IsPrime(4*n+3) and IsPrime(16*n+15) and IsPrime(64*n+63) and IsPrime(256*n+255) and IsPrime(1024*n+1023)] [From Vincenzo Librandi (vincenzo.librandi(AT)tin.it), Aug 05 2010]
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CROSSREFS
| Sequence in context: A023687 A204286 A010092 * A145209 A035911 A069333
Adjacent sequences: A023336 A023337 A023338 * A023340 A023341 A023342
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KEYWORD
| nonn
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AUTHOR
| David W. Wilson (davidwwilson(AT)comcast.net)
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