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A032498 Numbers n such that 243*2^n+1 is prime. +0
1
1, 4, 12, 13, 18, 24, 49, 64, 78, 144, 148, 204, 258, 453, 796, 1309, 1612, 1812, 3873, 4348, 6354, 7996, 8536, 10128, 11289, 29544, 32773, 123114, 130998, 153417 (list; graph; listen)
OFFSET

1,2

LINKS

Ray Ballinger, Proth Search Page

Ray Ballinger and Wilfrid Keller, List of primes k.2^n + 1 for k < 300

Wilfrid Keller, List of primes k.2^n - 1 for k < 300

Index entries for sequences of n such that k*2^n-1 (or k*2^n+1) is prime

CROSSREFS

Sequence in context: A120252 A103053 A087760 this_sequence A144613 A031330 A052339

Adjacent sequences: A032495 A032496 A032497 this_sequence A032499 A032500 A032501

KEYWORD

nonn,hard

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com).

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Last modified December 13 23:45 EST 2009. Contains 170824 sequences.


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