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 A086304 Numbers n such that n+6 is prime. 3
 1, 5, 7, 11, 13, 17, 23, 25, 31, 35, 37, 41, 47, 53, 55, 61, 65, 67, 73, 77, 83, 91, 95, 97, 101, 103, 107, 121, 125, 131, 133, 143, 145, 151, 157, 161, 167, 173, 175, 185, 187, 191, 193, 205, 217, 221, 223, 227, 233, 235, 245, 251, 257, 263, 265, 271, 275, 277 (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 Vincenzo Librandi, Table of n, a(n) for n = 1..1000 FORMULA a(n) = 2*A089038(n+1)-1. MATHEMATICA Select[Range[0, 900], PrimeQ[# + 6] &] (* Vincenzo Librandi, Oct 16 2012 *) PROG (Magma) [n: n in [0..300]| IsPrime(n + 6)]; // Vincenzo Librandi, Oct 16 2012 (PARI) is(n)=isprime(n+6) \\ Charles R Greathouse IV, May 22 2017 CROSSREFS Cf. A089038. Sequence in context: A277907 A136144 A262084 * A193947 A120222 A054794 Adjacent sequences: A086301 A086302 A086303 * A086305 A086306 A086307 KEYWORD nonn,easy AUTHOR Giovanni Teofilatto, Aug 29 2003 EXTENSIONS Corrected and extended by Ray Chandler, Nov 29 2003 STATUS approved

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Last modified May 22 13:22 EDT 2024. Contains 372755 sequences. (Running on oeis4.)