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A005122
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(( primes = -1 mod 8 ) + 1)/8.
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5
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1, 3, 4, 6, 9, 10, 13, 16, 19, 21, 24, 25, 28, 30, 33, 34, 39, 45, 46, 48, 54, 55, 58, 60, 61, 63, 75, 76, 79, 81, 90, 91, 93, 94, 103, 105, 108, 111, 114, 115, 121, 123, 124, 129, 130, 133, 136, 138, 144, 153, 154
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,2
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COMMENTS
| Numbers such that 8*n-1 is prime. [From Harvey P. Dale, Nov 25 2011]
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LINKS
| Harvey P. Dale, Table of n, a(n) for n = 1..1000
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MATHEMATICA
| a={}; Do[x=8*n-1; If[PrimeQ[x], AppendTo[a, n]], {n, 10^2}]; a - Vladimir Orlovsky (4vladimir(AT)gmail.com), Apr 29 2008
Select[Range[160], PrimeQ[8#-1]&] (* From Harvey P. Dale, Nov 25 2011 *)
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CROSSREFS
| Sequence in context: A191185 A089986 A101448 * A166161 A130904 A034706
Adjacent sequences: A005119 A005120 A005121 * A005123 A005124 A005125
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KEYWORD
| nonn
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com).
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