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 A050819 #13 Aug 20 2021 04:24:49 %S A050819 3,141,59265,358979,3238462643,3832795028841,97169399375105, %T A050819 820974944592307,81640628620899862803,48253421170679821480865, %U A050819 132823066470938446095505,82231725359408128481117450284102701,9385211055596446229489549303819644288109 %N A050819 Increasing odd numbers seen in decimal expansion of Pi (disregarding the decimal period) contiguous, smallest and distinct. %C A050819 Leading zero not allowed thus forcing continuation of previous term. %H A050819 Carlos Rivera, <a href="http://www.primepuzzles.net/problems/prob_018.htm">Problem 18. Pi as a concatenation of the smallest contiguous different primes</a>, The Prime Puzzles & Problems Connection. %Y A050819 Cf. A000796, A016062, A037244, A047777, A050817, A016062, A050818, A050807. %K A050819 nonn,easy,base %O A050819 1,1 %A A050819 _Patrick De Geest_, Oct 15 1999 %E A050819 a(12) corrected and a(13) from _Sean A. Irvine_, Aug 19 2021