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 A038828 #15 May 10 2025 15:40:41
%S A038828 5761455,5317482,5173388,5084001,5019541,4968836,4928228,4893248,
%T A038828 4863036,4838319,4814936,4792235,4773628,4757140,4741055,4725305,
%U A038828 4711186,4699403,4685506,4674359,4664239,4653596,4644818,4633507,4624924,4618796,4608025,4600066,4593753
%N A038828 Number of primes between n*10^8 and (n+1)*10^8.
%C A038828 Because the density of primes generally decreases as the range increases, the terms of the sequence generally are in decreasing order. - _Harvey P. Dale_, May 10 2025
%H A038828 Jon E. Schoenfield, <a href="/A038828/b038828.txt">Table of n, a(n) for n = 0..9999</a>
%t A038828 Table[ PrimePi[(n+1)*10^8] - PrimePi[n*10^8], {n, 0, 23}]
%t A038828 Differences[PrimePi[10^8 Range[0,30]]] (* _Harvey P. Dale_, May 10 2025 *)
%Y A038828 Cf. A038823, A038824, A038825, A038826, A038827, A038829, A038830, A038831, A038832, A080132.
%K A038828 nonn
%O A038828 0,1
%A A038828 _Jeff Burch_
%E A038828 Edited and extended by _Robert G. Wilson v_, Jan 29 2003
%E A038828 More terms from _Jon E. Schoenfield_, Mar 21 2021