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 A030468 #14 Feb 19 2024 01:54:13 %S A030468 5,11,17,31,41,89,229,239,263,307,313,317,353,359,383,389,401,409,439, %T A030468 449,563,619,701,761,773,787,797,827,907,929,1061,1163,1409,1447,1579, %U A030468 1597,1619,1621,1637,1697,1877,1933,2011,2029,2129,2131 %N A030468 Primes which when concatenated with next two primes are also prime. %H A030468 Paolo P. Lava, <a href="/A030468/b030468.txt">Table of n, a(n) for n = 1..2500</a> %Y A030468 Cf. A000040. %K A030468 nonn,base %O A030468 1,1 %A A030468 _Patrick De Geest_