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 A095178 #9 Mar 24 2021 08:06:31 %S A095178 2,9,1,9,9,9,3,3,3,9,3,7,3,1,7,7,9,9,1,9,7,3,9,3,3 %N A095178 Final digit of the (10^n)-th prime. %F A095178 a(n) = A010879(A006988(n)). %o A095178 (PARI) a(n)=prime(10^n)%10 \\ _Charles R Greathouse IV_, Dec 29 2012 %Y A095178 Cf. A006988, A010879. %K A095178 nonn,base,hard,more %O A095178 0,1 %A A095178 _Cino Hilliard_, Jun 21 2004 %E A095178 a(19)-a(24) added from the b-file at A006988 by _Amiram Eldar_, Mar 24 2021