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A110920 Integers n such that 2*10^n+81 is a prime number. +0
1
2, 3, 6, 7, 8, 15, 36, 38, 51, 168, 1000, 2955 (list; graph; listen)
OFFSET

1,1

COMMENT

Some of the larger entries may only correspond to probable primes.

EXAMPLE

n = 3 is a member because 2*10^3+81 = 2*1000+81 = 2000+81 = 2081 and 2081 is prime.

CROSSREFS

Cf. A049054, A088274, A088275, A095688, A107083, A108049, A108050, A108052, A108054.

Sequence in context: A127330 A035346 A066646 this_sequence A145266 A047561 A153123

Adjacent sequences: A110917 A110918 A110919 this_sequence A110921 A110922 A110923

KEYWORD

nonn

AUTHOR

Julien Peter Benney (jpbenney(AT)ftml.net), Oct 04 2005

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Last modified November 27 22:38 EST 2009. Contains 167602 sequences.


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