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 A242260 #10 Nov 17 2019 22:37:52
%S A242260 11,17,23,31,41,53,67,73,79,83,97,109,113,149,151,163,167,197,199,229,
%T A242260 241,251,269,281,307,331,349,379,383,389,401,433,439,457,461,463,503,
%U A242260 547,563,593,599,601,613,617,631,643,659,661,673,691,701,709,739,769
%N A242260 Primes p such that p^2-2 is semiprime.
%H A242260 Robert Israel, <a href="/A242260/b242260.txt">Table of n, a(n) for n = 1..10000</a>
%p A242260 filter:= t -> isprime(t) and numtheory:-bigomega(t^2-2)=2:
%p A242260 select(filter, [seq(i,i=3..10000,2)]); # _Robert Israel_, Nov 17 2019
%t A242260 Select[Table[Prime[k], {k, 1000}], PrimeOmega[#^2 - 2] == 2 &] (* M7*)
%o A242260 (PARI) s=[]; forprime(p=2, 1000, if(bigomega(p^2-2)==2, s=concat(s, p))); s \\ _Colin Barker_, May 10 2014
%Y A242260 Subsequence of A219602. Cf. A001358.
%K A242260 nonn
%O A242260 1,1
%A A242260 _Zak Seidov_, May 09 2014