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 A132241 #12 Apr 22 2025 22:26:03
%S A132241 11,13,41,43,71,73,101,103,191,193,281,283,311,313,431,433,461,463,
%T A132241 521,523,641,643,821,823,881,883,1031,1033,1061,1063,1091,1093,1151,
%U A132241 1153,1301,1303,1451,1453,1481,1483,1721,1723,1871,1873
%N A132241 Twin primes congruent to {11, 13} mod 30.
%H A132241 Vincenzo Librandi, <a href="/A132241/b132241.txt">Table of n, a(n) for n = 1..1000</a>
%H A132241 C. K. Caldwell, <a href="http://primes.utm.edu">The Prime Pages</a>.
%H A132241 C. K. Caldwell, <a href="https://t5k.org/glossary/page.php?sort=TwinPrime">Twin Primes</a>.
%t A132241 a[0]=1;a[n_]:=a[n]=a[n-1]+10;Flatten[Table[If[PrimeQ[a[n]]&&PrimeQ[a[n]+2],{a[n],a[n]+2},{}],{n,0,200}]] (* _Vincenzo Librandi_, Aug 15 2012 *)
%Y A132241 Cf. A000040, A001097, A001359, A006512, A039949, A068231.
%K A132241 easy,nonn
%O A132241 1,1
%A A132241 _Omar E. Pol_, Aug 15 2007