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A089033
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Numbers n such that 7*n+3 is prime.
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9
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0, 2, 4, 8, 10, 14, 22, 28, 32, 34, 38, 40, 44, 50, 52, 58, 68, 74, 80, 82, 88, 92, 94, 110, 112, 118, 122, 134, 140, 142, 148, 158, 160, 164, 170, 178, 182, 184, 188, 194, 208, 212, 220, 224, 230, 232, 238, 242, 250, 260, 268, 272, 278, 298, 304, 320, 334, 340
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,2
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REFERENCES
| 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
| a(n) = A024903(n)-1 = A033868(n)-2 = A090614(n)*2.
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MATHEMATICA
| Select[Range[1000], PrimeQ[7#+3]&]
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CROSSREFS
| A045437 gives primes, A090613 gives prime index.
Cf. A024903, A033868, A045437, A090613, A090614.
Sequence in context: A200566 A091992 A206037 * A049422 A178215 A067925
Adjacent sequences: A089030 A089031 A089032 * A089034 A089035 A089036
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KEYWORD
| easy,nonn
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AUTHOR
| Giovanni Teofilatto (g.teofilatto(AT)tiscalinet.it), Nov 12 2003
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EXTENSIONS
| Corrected and extended by Ray Chandler (rayjchandler(AT)sbcglobal.net), Nov 12 2003
Offset corrected by Arkadiusz Wesolowski, Aug 09 2011
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