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Search: id:A102633
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| A102633 |
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Numbers n such that 2^n+11 is prime. |
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3
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| 1, 3, 5, 7, 9, 15, 23, 29, 31, 55, 71, 77, 297, 573, 1301, 1555, 1661, 4937, 5579, 6191, 6847, 6959
(list; graph; listen)
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OFFSET
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1,2
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LINKS
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Lei Zhou, Between 2^n and primes.
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EXAMPLE
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2^1+11 = 13 is prime
2^3+11 = 19 is prime
2^2+11 = 15 is not prime
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MATHEMATICA
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Do[ If[ PrimeQ[2^n + 11], Print[n]], {n, 15250}] (from Robert G. Wilson v Jan 21 2005)
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CROSSREFS
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Cf. A094076, A057732, A059242, A057195, A057200.
Sequence in context: A018736 A018388 A100866 this_sequence A052942 A117913 A064411
Adjacent sequences: A102630 A102631 A102632 this_sequence A102634 A102635 A102636
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KEYWORD
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nonn
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AUTHOR
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Lei Zhou (lzhou5(AT)emory.edu), Jan 20 2005
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EXTENSIONS
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a(18) - a(22) from Robert G. Wilson v (rgwv(AT)rgwv.com), Jan 21 2005
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