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Search: id:A005539
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| A005539 |
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Numbers n such that 10*3^n + 1 is prime.
(Formerly M2337)
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+0
1
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| 1, 3, 4, 7, 9, 12, 18, 22, 102, 112, 157, 162, 289, 619, 763, 1389, 1783, 1882, 3294, 3567
(list; graph; listen)
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OFFSET
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1,2
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REFERENCES
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N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
H. C. Williams and C. R. Zarnke, Some prime numbers of the forms 2*3^n+1 and 2*3^n-1, Math. Comp., 26 (1972), 995-998.
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MATHEMATICA
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Do[ If[ PrimeQ[ 10*3^n + 1], Print[n]], {n, 1, 6810}]
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CROSSREFS
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Sequence in context: A060142 A049844 A140402 this_sequence A053099 A073273 A072441
Adjacent sequences: A005536 A005537 A005538 this_sequence A005540 A005541 A005542
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KEYWORD
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hard,nonn
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AUTHOR
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N. J. A. Sloane (njas(AT)research.att.com).
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EXTENSIONS
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More terms from Robert G. Wilson v (rgwv(AT)rgwv.com), Sep 07, 2000.
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