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 A069100 #24 Jun 17 2021 09:14:43 %S A069100 2,13,107,1021,10061,100069,1000117,10000189,100000193,1000000181, %T A069100 10000000259,100000000193,1000000000303,10000000000411, %U A069100 100000000000487,1000000000000513,10000000000000931,100000000000000591,1000000000000000861,10000000000000000667 %N A069100 n-th n-digit prime number. %H A069100 Eduard Roure Perdices, <a href="/A069100/b069100.txt">Table of n, a(n) for n = 1..1000</a> %t A069100 a[n_] := NextPrime[10^(n - 1), n]; (* _Eduard Roure Perdices_, May 17 2021 *) %o A069100 (PARI) a(n)=prime(primepi(10^(n-1))+n) \\ _Franklin T. Adams-Watters_, Mar 07 2014 %o A069100 (Python) %o A069100 from sympy import nextprime %o A069100 def a(n): return nextprime(10**(n-1), ith=n) %o A069100 print([a(n) for n in range(1, 21)]) # _Michael S. Branicky_, Jun 16 2021 %Y A069100 Cf. A003617, A107108, A107109. %K A069100 nonn,base %O A069100 1,1 %A A069100 _Darrell Minor_, Apr 05 2002 %E A069100 More terms from _Vladeta Jovovic_, Apr 07 2002 %E A069100 Extended by _Eduard Roure Perdices_, May 17 2021