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A023351 Numbers n such that n remains prime through 5 iterations of function f(x) = 8x + 9. 0
294793, 2586943, 5360623, 6351613, 7965743, 11141083, 11378453, 13458923, 14884823, 15585523, 18691633, 25387763, 29964293, 30766283, 32388253, 38647723, 40653433, 48716873, 48786593, 52628473, 54270533, 55507853, 56575633, 59103403 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

n, 8*n+9, 64*n+81, 512*n+657, 4096*n+5265 and 32768*n+42129 are primes. [From Vincenzo Librandi, Aug 05 2010]

LINKS

Table of n, a(n) for n=1..24.

PROG

(MAGMA) [n: n in [1..19000000] | IsPrime(n) and IsPrime(8*n+9) and IsPrime(64*n+81) and IsPrime(512*n+657) and IsPrime(4096*n+5265) and IsPrime(32768*n+42129)] [From Vincenzo Librandi, Aug 05 2010]

CROSSREFS

Sequence in context: A178997 A206237 A236153 * A109031 A137817 A137818

Adjacent sequences:  A023348 A023349 A023350 * A023352 A023353 A023354

KEYWORD

nonn

AUTHOR

David W. Wilson

STATUS

approved

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Last modified September 20 18:52 EDT 2014. Contains 247018 sequences.