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A032489 Numbers n such that 225*2^n+1 is prime. 0
3, 6, 8, 9, 12, 13, 14, 19, 22, 32, 35, 37, 80, 86, 102, 118, 135, 159, 205, 269, 430, 435, 535, 547, 830, 1020, 1030, 1079, 1089, 1112, 1189, 2244, 2397, 4497, 5888, 9549, 15942, 16855, 19736, 21936, 26744, 26926, 36744, 51142, 53155, 53532 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

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: A191880 A084020 A167195 * A153769 A155723 A095277

Adjacent sequences:  A032486 A032487 A032488 * A032490 A032491 A032492

KEYWORD

nonn,hard

AUTHOR

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

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Last modified February 15 05:15 EST 2012. Contains 205694 sequences.