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 A291599 #26 Aug 29 2017 20:14:17 %S A291599 314159,949129,266830,178653,872117,872117,872117,919441,919441, %T A291599 735287,820737,420516,802307,556505,267638,107072 %N A291599 First 6-digit number to appear n times in the decimal expansion of Pi. %C A291599 The first 2 appearances of a(2) = 949129 both end at the beginning of a block of 100 digits of Pi after the decimal point. The 5th block of 100 digits of Pi after the decimal point ends with 94912, and the 6th block of 100 digits starts with 9. The 13th block of 100 digits of Pi after the decimal point ends with 94912, and the 14th block of 100 digits starts with 9. %e A291599 a(2) = 949129 because 949129 is the first 6-digit number to appear 2 times in the decimal expansion of Pi. %Y A291599 Cf. A000796, A096567, A276686, A276992, A276993, A277171, A291600. %K A291599 nonn,base,more %O A291599 1,1 %A A291599 _Bobby Jacobs_, Aug 27 2017 %E A291599 a(11)-a(16) added by _Alois P. Heinz_, Aug 28 2017