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 A037003 #17 Feb 16 2025 08:32:37 %S A037003 2,19,23,36,57,59,60,70,87,92,104,119,125,126,145,151,157,162,182,183, %T A037003 188,192,201,202,217,218,223,227,251,254,262,266,271,273,278,293,296, %U A037003 303,321,339,348,371,376,384,386,392,400,449,453,454,464,480,497,511 %N A037003 Positions of the digit '4' in the decimal expansion of Pi. %H A037003 Amiram Eldar, <a href="/A037003/b037003.txt">Table of n, a(n) for n = 1..10000</a> %H A037003 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/PiDigits.html">Pi Digits.</a> %t A037003 Flatten @ Position[ RealDigits[Pi - 3, 10, 500][[1]], 4] (* _Robert G. Wilson v_, Mar 07 2011 *) %Y A037003 Cf. A036974. %Y A037003 Cf. A037000, A037001, A037002, A037004, A037005, A036974, A037006, A037007, A037008. %K A037003 base,nonn %O A037003 1,1 %A A037003 Nicolau C. Saldanha (nicolau(AT)mat.puc-rio.br)