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%I #2 Oct 01 2013 21:35:22
%S 13,17,25,33,49,57,73,81,97,121,129,153,169,177,193,217,241,249,273,
%T 289,297,321,337,361,393,409,417,433,441,457,513,529,553,561,601,609,
%U 633,657,673,697,721,729,769,777,793,801,849,897,913,921,937,961,969
%N Numbers n such that (n-5)/4 is prime.
%F a(n) = 4*prime(n) + 5. - Zak Seidov, May 12 2007
%e For n=13, (13-5)/4 = 2 which is prime so 13 is the first entry.
%o (PARI) g(m) = forprime(p=2,m,n=4*p+5;print1(n","))
%Y Cf. A000040.
%K easy,nonn
%O 1,1
%A _Cino Hilliard_, May 11 2007, May 17 2007
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