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 A089033 Numbers n such that 7*n+3 is prime. 9
 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; text; internal format)
 OFFSET 1,2 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 LINKS FORMULA a(n) = A024903(n)-1 = A033868(n)-2 = A090614(n)*2. MATHEMATICA Select[Range[1000], PrimeQ[7#+3]&] PROG (PARI) is(n)=isprime(7*n+3) \\ Charles R Greathouse IV, Feb 17 2017 CROSSREFS A045437 gives primes, A090613 gives prime index. Cf. A024903, A033868, A090614. Sequence in context: A091992 A206037 A242247 * A049422 A178215 A067925 Adjacent sequences:  A089030 A089031 A089032 * A089034 A089035 A089036 KEYWORD easy,nonn AUTHOR Giovanni Teofilatto, Nov 12 2003 EXTENSIONS Corrected and extended by Ray Chandler, Nov 12 2003 Offset corrected by Arkadiusz Wesolowski, Aug 09 2011 STATUS approved

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