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Search: id:A081759
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| A081759 |
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Numbers n such that 5n+6 is prime. |
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+0
10
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| 1, 5, 7, 11, 13, 19, 25, 29, 35, 37, 41, 47, 49, 53, 55, 61, 65, 79, 83, 85, 91, 97, 103, 107, 113, 119, 125, 127, 131, 137, 139, 149, 151, 161, 163, 175, 181, 187, 193, 197, 203, 205, 209, 211, 217, 229, 233, 235, 239, 245, 257, 259, 263, 271, 275, 289, 293, 295
(list; graph; listen)
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OFFSET
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1,2
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REFERENCES
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M. Cerasoli, F. Eugeni and M. Protasi, Elementi di Matematica Discreta, Bologna 1988
Emanuele Munarini and Norma Zagaglia Salvi, Matematica Discreta, UTET, CittaStudiEdizioni, Milano 1997
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FORMULA
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a(n) = 2*A024912(n+1)-1.
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MATHEMATICA
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Select[Range[300], PrimeQ[5# + 6] &] (*Chandler*)
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CROSSREFS
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Cf. A024912, A030430, A049511.
Sequence in context: A039681 A084441 A112397 this_sequence A152468 A088664 A023219
Adjacent sequences: A081756 A081757 A081758 this_sequence A081760 A081761 A081762
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KEYWORD
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easy,nonn
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AUTHOR
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Giovanni Teofilatto (g.teofilatto(AT)tiscalinet.it), Nov 21 2003
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EXTENSIONS
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Corrected by Ray Chandler (rayjchandler(AT)sbcglobal.net), Nov 22 2003
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