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A217347 Numbers n such that 3^n - 10 is prime. 19
3, 4, 5, 6, 8, 17, 18, 21, 22, 36, 38, 41, 54, 56, 81, 92, 100, 106, 160, 310, 406, 560, 902, 5549, 9926, 12334, 19374, 19995, 20166, 39609, 62900, 186903 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

a(33) > 2*10^5. - Robert Price, Sep 07 2013

LINKS

Table of n, a(n) for n=1..32.

MATHEMATICA

Select[Range[2, 5000], PrimeQ[3^# - 10] &]

PROG

(PARI) for(n=2, 5*10^3, if(isprime(3^n-10), print1(n", ")))

(MAGMA) /* The code produces the sequence up to 560: */ [n: n in [2..800] | IsPrime(3^n - 10)];

CROSSREFS

Cf. A014224, A051783, A058958, A058959.

Sequence in context: A073568 A094576 A103103 * A249798 A037348 A277898

Adjacent sequences:  A217344 A217345 A217346 * A217348 A217349 A217350

KEYWORD

nonn

AUTHOR

Vincenzo Librandi, Oct 01 2012

EXTENSIONS

a(24)-a(32) from Robert Price, Sep 07 2013

STATUS

approved

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Last modified January 16 23:43 EST 2022. Contains 350377 sequences. (Running on oeis4.)