%I #5 Oct 15 2013 03:39:51
%S 1,3,7,10,12,15,17,22,28,29,49,64,113,117,124,127,129,138,140,143,152,
%T 182,183,194,197,199,203,229,238,248,260,264,285,302,308,322,329,355,
%U 379,385,390,402,444,455,465,493,495,502,507,523,537,542,568,575,582
%N Numbers n with property that 6n-1 is in A053182.
%o (PARI) isok(n) = isprime(p=6*n-1) && isprime(p^2+p+1); \\ _Michel Marcus_, Oct 15 2013
%Y Cf. A053182.
%K nonn
%O 1,2
%A _Zak Seidov_, Nov 10 2008