This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A199306 #15 Sep 08 2022 08:46:00
%S A199306 11,101,1061,1601,10061,10601,11161,16001,16061,16111,16661,101611,
%T A199306 106661,116101,166601,1011601,1016011,1016611,1061101,1066111,1106101,
%U A199306 1110611,1111661,1116601,1160111,1160611,1166101,1600061,1611161,1616161,1660661,1661111,10011101,10100161,10106111
%N A199306 Palindromic primes in the sense of A007500 with digits '0', '1' and '6' only.
%C A199306 All terms start and end with the digit '1'. This fact is used in the given PARI program.
%o A199306 (PARI) a(n=50,list=0,L=[0,1,6])={ for(d=1,1e9, my(t,u=vector(d-1,i,10^(d-i))~,o=10^d+1);forvec(v=vector(#u,i,[1,#L]),isprime(t=o+vector(#u,i,L[v[i]])*u) || next; isprime(A004086(t)) || next; list & print1(t", "); n-- || return(t)))} \\ _M. F. Hasler_, Nov 07 2011
%o A199306 (Magma) [p: p in PrimesUpTo(10^8) | Set(Intseq(p)) subset [0,1,6] and IsPrime(Seqint(Reverse(Intseq(p))))]; // _Bruno Berselli_, Nov 07 2011
%Y A199306 Cf. A020449 - A020472, A062350, A087510 - A087515, A199325 - A199329.
%K A199306 nonn,base
%O A199306 1,1
%A A199306 _M. F. Hasler_, Nov 06 2011