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 A006988 M2151 #97 Feb 16 2025 08:32:31
%S A006988 2,29,541,7919,104729,1299709,15485863,179424673,2038074743,
%T A006988 22801763489,252097800623,2760727302517,29996224275833,
%U A006988 323780508946331,3475385758524527,37124508045065437,394906913903735329,4185296581467695669,44211790234832169331
%N A006988 a(n) = (10^n)-th prime.
%C A006988 Check the b-file for terms beyond those listed above.
%D A006988 R. L. Graham, D. E. Knuth and O. Patashnik, Concrete Mathematics. Addison-Wesley, Reading, MA, 1990, p. 111.
%D A006988 N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
%H A006988 Marc Deleglise et al., <a href="/A006988/b006988.txt">Table of n, a(n) for n = 0..24</a> (a(23) corrected and a(24) added using Kim Walisch's primecount program, by David Baugh, Nov 11 2015)
%H A006988 C. K. Caldwell, <a href="http://www.utm.edu/research/primes/notes/md.html">Marc Deleglise's work on new values of pi(x)</a>
%H A006988 UTM, <a href="https://t5k.org/nthprime/">The Nth Prime Page</a>.
%H A006988 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/PrimeNumber.html">Prime Number</a>
%H A006988 R. G. Wilson, V, <a href="/A002982/a002982.pdf">Letter to N. J. A. Sloane, Jan. 1989</a>
%e A006988 a(0) = 10^0-th prime = first prime = 2.
%p A006988 A006988:=n->ithprime(10^n): seq(A006988(n), n=0..7); # _Wesley Ivan Hurt_, Nov 21 2014
%t A006988 Table[Prime[10^n], {n, 0, 12}]
%o A006988 (PARI) a(n)=prime(10^n) \\ _Charles R Greathouse IV_, Jul 21 2011
%Y A006988 Cf. A006880, A033844, A119780.
%Y A006988 Cf. A099260, A274767 ((leading) digits of 103-digit a(100)).
%K A006988 nonn,nice
%O A006988 0,1
%A A006988 _N. J. A. Sloane_, _Robert G. Wilson v_
%E A006988 More terms from _Paul Zimmermann_
%E A006988 a(19) from _Marc Deleglise_, Jun 29 2008
%E A006988 a(20) found by _Andrey V. Kulsha_ using a program by Xavier Gourdon, Oct 05 2011
%E A006988 a(21) from _Henri Lifchitz_, Sep 09 2014
%E A006988 a(22) from _Henri Lifchitz_, Nov 21 2014