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 A335363 #35 Jun 21 2020 17:53:08 %S A335363 2,19,13,131,2111,12815137,103723971119 %N A335363 The smallest prime and start of a run of exactly n primes that remain prime after each digit is replaced by its square. %C A335363 a(7) > 4294967296. %C A335363 Terms in A020449 are not terms of this sequence. - _Chai Wah Wu_, Jun 18 2020 %C A335363 a(8) > 10^13, if it exists. - _Giovanni Resta_, Jun 21 2020 %e A335363 a(3)=13 because 13 -> 19 -> 181 are primes and 1641 is composite. %Y A335363 Cf. A020449, A068492. %K A335363 nonn,base,more %O A335363 1,1 %A A335363 _Carlos Rivera_, Jun 10 2020 %E A335363 a(7) from _Giovanni Resta_, Jun 20 2020