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 A059498 #9 Sep 26 2022 02:00:04 %S A059498 2,3,5,7,17,19,29,59,79,89,389,2389,2399,2699,2999,4999,8999,98999, %T A059498 298999,598999,599999,799999,1799999,4799999,4999999,904999999, %U A059498 974999999,60974999999,68974999999,68975999999,3000068975999999,3000568975999999 %N A059498 a(1) = 2; a(n+1) is obtained by trying to change just one digit of a(n), starting with the least significant digit, until a new prime is reached. Take the lexicographically earliest sequence. Digits may be replaced by any larger digit. %C A059498 It is not known if the sequence is infinite. %H A059498 Sean A. Irvine, <a href="/A059498/b059498.txt">Table of n, a(n) for n = 1..500</a> %Y A059498 Another decimal analog of A059458. Cf. A059471, A059497. %K A059498 nonn,base,nice %O A059498 1,1 %A A059498 _David W. Wilson_, Feb 05 2001