|
%I #20 Sep 08 2022 08:44:48
%S 1,5,7,9,11,17,25,27,31,35,37,39,41,47,49,51,61,67,69,75,77,79,81,95,
%T 101,111,115,117,119,121,125,135,137,139,145,147,159,161,165,179,181,
%U 185,189,195,199,207,209,215,217,221,235,237,245,247,249,255,257,261,265,271,275
%N Numbers k such that 9*k - 2 is prime.
%H Vincenzo Librandi, <a href="/A024910/b024910.txt">Table of n, a(n) for n = 1..1000</a>
%t Select[Range[300], PrimeQ[9 # - 2] &] (* _Vincenzo Librandi_, Sep 26 2012 *)
%o (Magma) [n: n in [1..300] | IsPrime(9*n-2)]; // _Vincenzo Librandi_, Nov 19 2010
%o (PARI) is(n)=isprime(9*n-2) \\ _Charles R Greathouse IV_, Jun 06 2017
%Y Cf. A061241 (associated primes).
%K nonn,easy
%O 1,2
%A _Clark Kimberling_
|
