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 A133268 #15 Aug 10 2025 18:32:49 %S A133268 5,15,31,37,48,79,81,84,89,95,118,137,189,222,232,240,258,264,269,279, %T A133268 298,314,315,362,371,394,435,451,460,463,466,472,480,497,507,510,520, %U A133268 521,525,541,565,569,571,596,600,606,609,610,636,670,702,703,706,707 %N A133268 a(n) = positions of 0's after decimal point in decimal expansion of 1/Pi. %H A133268 Vincenzo Librandi, <a href="/A133268/b133268.txt">Table of n, a(n) for n = 1..10000</a> %t A133268 Flatten[Position[RealDigits[1/Pi,10,1000][[1]],0]] (* _Harvey P. Dale_, May 16 2012 *) %Y A133268 Cf. A037008, A049541, A014777. %K A133268 nonn,base %O A133268 1,1 %A A133268 _Artur Jasinski_, Oct 16 2007