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%I #20 Sep 08 2022 08:45:59
%S 29,59,239,479,15359,245759,1966079,32212254719,32985348833279,
%T 141670994486089356410879,18133887294219437620592639,
%U 72535549176877750482370559,1246151246048358630847319119012823039,638029437976759618993827388934565396479
%N Primes of the form 15*2^n - 1.
%C Primes in A196305.
%H Vincenzo Librandi, <a href="/A196940/b196940.txt">Table of n, a(n) for n = 1..28</a>
%t Select[Table[15 2^n - 1, {n, 1, 300}], PrimeQ] (* _Vincenzo Librandi_, Feb 23 2014 *)
%o (PARI) for(n=1,1e3,if(ispseudoprime(t=15<<n-1),print1(t", "))) \\ _Charles R Greathouse IV_, Oct 08 2011
%o (Magma) [a: n in [1..130] | IsPrime(a) where a is 15*2^n-1]; // _Vincenzo Librandi_, Feb 23 2014
%Y Cf. A002237 (n such that 15*2^n-1 is prime).
%K nonn
%O 1,1
%A _Brad Clardy_, Oct 07 2011
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