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 A080124 #14 Oct 28 2021 12:59:31 %S A080124 29844570422669,58478215681891,86688602810119,114630988904000, %T A080124 142377417196364,169969662554551,197434994078331,224792606318600, %U A080124 252056733453928,279238341033925,306346140642929,333387204489157 %N A080124 Number of primes less than n*10^15. %H A080124 Robert G. Wilson v, <a href="/A080124/b080124.txt">Table of n, a(n) for n = 1..10000</a> %H A080124 Thomas R. Nicely, <a href="https://faculty.lynchburg.edu/~nicely/index.html">Some Results of Computational Research in Prime Numbers</a> [See local copy in A007053] %H A080124 Tomás Oliveira e Silva, <a href="http://sweet.ua.pt/tos/primes.html">Tables of values of pi(x) and of pi2(x)</a> %o A080124 (PARI) a(n)=primepi(10^15*n) \\ _Charles R Greathouse IV_, Apr 29 2015 %Y A080124 Cf. A038801, A028505, A038812, A038813, A038814, A038815, A038816, A038817, A038818, A038819, A038820, A038821, A080122, A080123, A080125, A080126, A080127, A080128, A080129. %K A080124 nonn %O A080124 1,1 %A A080124 _Robert G. Wilson v_ and _Jeff Burch_, Jan 29 2003