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A104070 Primes of the form 2^n + 9. 14
11, 13, 17, 41, 73, 137, 521, 1033, 262153, 8388617, 1073741833, 137438953481, 140737488355337, 144115188075855881, 73786976294838206473, 4835703278458516698824713, 39614081257132168796771975177 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..17.

MATHEMATICA

a = Delete[Union[Flatten[Table[If [PrimeQ[2^n + 9] == True, 2^ n + 9, 0], {n, 1, 400}]]], 1]

PROG

(MAGMA) [a: n in [0..250] | IsPrime(a) where a is 2^n+9]; // Vincenzo Librandi, Jan 26 2011

CROSSREFS

Cf. A057196 (numbers n such that 2^n + 9 is prime). [From Klaus Brockhaus, Mar 14 2009]

Sequence in context: A209871 A167794 A019336 * A019371 A068335 A306766

Adjacent sequences:  A104067 A104068 A104069 * A104071 A104072 A104073

KEYWORD

nonn

AUTHOR

Roger L. Bagula, Mar 02 2005

STATUS

approved

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Last modified March 19 23:02 EDT 2019. Contains 321343 sequences. (Running on oeis4.)