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 A038830 #10 Jun 14 2024 08:47:21
%S A038830 455052511,427154205,417799210,411949507,407699145,404383577,
%T A038830 401661384,399359707,397369745,395625822,394050419,392654167,
%U A038830 391378851,390187908,389111798,388095981,387156696,386287527,385446999,384679900,383929532,383230773,382562467,381941653
%N A038830 Number of primes between n*10^10 and (n+1)*10^10.
%H A038830 Amiram Eldar, <a href="/A038830/b038830.txt">Table of n, a(n) for n = 0..1000</a>
%t A038830 Table[ PrimePi[(n+1)*10^10] - PrimePi[n*10^10], {n, 0, 20}]
%Y A038830 Cf. A038823, A038824, A038825, A038826, A038827, A038828, A038829, A038831, A038832, A080132.
%K A038830 nonn
%O A038830 0,1
%A A038830 _Jeff Burch_
%E A038830 Edited and extended by _Robert G. Wilson v_, Jan 29 2003
%E A038830 a(21)-a(23) from _Amiram Eldar_, Jun 14 2024