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 A132248 #7 Nov 30 2019 13:10:28 %S A132248 211,331,541,631,691,751,991,1171,1201,1381,1471,1531,1741,1801,1831, %T A132248 1861,2011,2161,2221,2251,2281,2371,2521,2671,2851,3061,3181,3271, %U A132248 3511,3571,3631,3691,4111,4201,4441,4561,4591,4621,4831,4861 %N A132248 Isolated primes congruent to 1 (mod 30). %H A132248 Harvey P. Dale, <a href="/A132248/b132248.txt">Table of n, a(n) for n = 1..1000</a> %H A132248 C. K. Caldwell, <a href="http://primes.utm.edu">The Prime Pages</a>. %H A132248 Omar E. Pol, <a href="http://www.polprimos.com">Determinacion geometrica de los numeros primos y perfectos</a>. %t A132248 Select[Select[Partition[Prime[Range[700]],3,1],FreeQ[Differences[#],2]&][[All,2]],Mod[#,30]==1&] (* _Harvey P. Dale_, Nov 30 2019 *) %Y A132248 Cf. A007510. %K A132248 easy,nonn %O A132248 1,1 %A A132248 _Omar E. Pol_, Aug 20 2007