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 A080132 #14 Mar 25 2021 19:44:30
%S A080132 346065536839,329830372432,324225759582,320690302849,318111792865,
%T A080132 316086663691,314422443046,313011242183,311788137296,310709500019,
%U A080132 309745405634,308874350130,308080330159,307351596825,306677187567,306051434210,305466718919,304918341204,304402227011
%N A080132 Number of primes between n*10^13 and (n+1)*10^13.
%H A080132 Chai Wah Wu, <a href="/A080132/b080132.txt">Table of n, a(n) for n = 0..1000</a>
%t A080132 Table[ PrimePi[(n+1)*10^13] - PrimePi[n*10^13], {n, 0, 9}]
%Y A080132 Cf. A038823, A038824, A038825, A038826, A038827, A038828, A038829, A038830, A038831, A038832.
%K A080132 nonn
%O A080132 0,1
%A A080132 _Robert G. Wilson v_ and _Jeff Burch_, Jan 29 2003
%E A080132 a(8)-a(9) added using Mathematica, by _David Baugh_, Oct 06 2011
%E A080132 More terms from _Chai Wah Wu_, Mar 25 2021