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 A050817 #8 Sep 05 2019 02:12:54 %S A050817 3,1,41,5,9,265,35,89,7,93,23,8462643,383,27,95028841,97,169,39,937, %T A050817 5105,8209,749,445,92307,81,64062862089,9862803,4825,3421,17067,9821, %U A050817 480865,13,28230664709,3844609,5505,8223,17,25,359,4081,28481,11 %N A050817 Odd numbers seen in decimal expansion of Pi (disregarding the decimal period) contiguous, smallest and distinct. %C A050817 Leading zero not allowed thus forcing continuation of previous term. %H A050817 C. Rivera, <a href="http://www.primepuzzles.net/problems/prob_018.htm">Problem 18</a>, The Prime Puzzles & Problems Connection. %Y A050817 Cf. A047777, A050818, A016062, A050819, A050807. %K A050817 nonn,easy,base %O A050817 1,1 %A A050817 _Patrick De Geest_, Oct 15 1999