%I
%S 1,2,3,4,5,15,35,61,256,357,628,767,1064,1096,6608
%N Numbers n such that 4*10^n  11 is prime.
%C Numbers corresponding to terms <= 767 are certified primes.  _Klaus Brockhaus_, Feb 16 2005
%C The next term is larger than 2500.  _Stefan Steinerberger_, Feb 18 2006
%t For[n=1, n<2500,n++,If[PrimeQ[4*10^n11], Print[n]]] (* _Stefan Steinerberger_, Feb 18 2006 *)
%o (PARI) is(n)=ispseudoprime(4*10^n11) \\ _Charles R Greathouse IV_, Jun 13 2017
%K more,nonn
%O 1,2
%A Tom Mueller (muel4503(AT)unitrier.de), Feb 08 2005
%E a(9) to a(14) from _Klaus Brockhaus_, Feb 16 2005
%E One more term from _Ryan Propper_, Jul 21 2006
