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 A134251 #10 Mar 21 2020 07:21:15 %S A134251 2,10,18,41,45,50,64,65,82,97,99,101,103,113,116,133,147,170,172,175, %T A134251 178,191,251,252,255,265,275,285,295,297,304,329,333,340,346,350,379, %U A134251 385,399,410,418,432,433,443,459,473,485,493,494,509,515,519,553,558 %N A134251 Positions of 1 after decimal point in decimal expansion of 1/Pi. %H A134251 Amiram Eldar, <a href="/A134251/b134251.txt">Table of n, a(n) for n = 1..10000</a> %t A134251 Flatten @ Position[RealDigits[1/Pi, 10, 500][[1]], 1] (* _Amiram Eldar_, Mar 21 2020 *) %Y A134251 Cf. A037000, A014777, A134251, A134252, A134253, A134254, A134255, A134256, A134257, A134258, A134259, A134260. %K A134251 nonn,base %O A134251 1,1 %A A134251 _Artur Jasinski_, Oct 16 2007