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 A242562 #4 May 20 2014 23:43:22
%S A242562 13,1447,5527,28201,36217,75079,81157,95911,187423,188677,202327,
%T A242562 210643,248077,263323,282589,283267,423043,466897,472597,478189,
%U A242562 478603,631273,640261,695749,730111,736279,806929,808021,917641,964303,1018177,1026547,1064263,1108489,1150861
%N A242562 Primes p such that 1000p+1, 1000p+3, 1000p+7 and 1000p+9 are prime.
%e A242562 130001, 130003, 130007 and 130009 are all prime. Thus 13 is a member of this sequence.
%o A242562 (Python)
%o A242562 import sympy
%o A242562 from sympy import isprime
%o A242562 from sympy import prime
%o A242562 {print(prime(n)) for n in range(1,10**5) if isprime(1000*prime(n)+1) and isprime(1000*prime(n)+3) and isprime(1000*prime(n)+7) and isprime(1000*prime(n)+9)}
%o A242562 (PARI) for(n=1,10^5,s=prime(n);if(ispseudoprime(1000*s+1) && ispseudoprime(1000*s+3) && ispseudoprime(1000*s+7) && ispseudoprime(1000*s+9),print(s)));
%Y A242562 Cf. A236042, A067267.
%K A242562 nonn
%O A242562 1,1
%A A242562 _Derek Orr_, May 17 2014