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 A100895 #8 Jan 21 2019 19:01:55 %S A100895 7,71,719,7193,71933,719333 %N A100895 a(n) = smallest n-digit prime formed by appending a digit to a(n-1); a(1) = 7. %C A100895 There is no prime a(7) since 7193331,7193333,7193337,7193339 are not prime. %C A100895 These are the first 6 entries of A048552. - R. J. Mathar, Oct 15 2011 %e A100895 a(1)=7 %e A100895 a(2)=71 %e A100895 a(3)=719 %e A100895 a(4)=7193 %e A100895 a(5)=71933 %e A100895 a(6)=719333 %K A100895 nonn,base,fini,full %O A100895 1,1 %A A100895 _Jorge Coveiro_, Jan 10 2005 %E A100895 Edited by _Charles R Greathouse IV_, Aug 02 2010