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 A038831 #10 Jun 14 2024 07:16:56
%S A038831 4118054813,3889050246,3811334076,3762566522,3727130485,3699365644,
%T A038831 3676572524,3657309217,3640604059,3625924432,3612791400,3600947714,
%U A038831 3590161711,3580266494,3571130592,3562622357,3554715520,3547310538,3540307017,3533730778,3527508038,3521536373
%N A038831 Number of primes between n*10^11 and (n+1)*10^11.
%H A038831 Amiram Eldar, <a href="/A038831/b038831.txt">Table of n, a(n) for n = 0..1000</a>
%t A038831 Table[ PrimePi[(n+1)*10^11] - PrimePi[n*10^11], {n, 0, 17}]
%Y A038831 Cf. A038823, A038824, A038825, A038826, A038827, A038828, A038829, A038830, A038832, A080132.
%K A038831 nonn
%O A038831 0,1
%A A038831 _Jeff Burch_
%E A038831 Edited and extended by _Robert G. Wilson v_, Jan 29 2003
%E A038831 a(18)-a(21) from _Amiram Eldar_, Jun 14 2024