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 A139728 #6 Feb 22 2020 20:57:36 %S A139728 17,3,10,5,5,7,11,8,9,4,6,3,13,12,4,2,8,18,11,37,2,15,5,16,3,15,0,2, %T A139728 15,2,9,16,2,0,4,2,5,22,4,4,12,21,7,41,19,6,2,19,1,6,4,3,34,4,0,0,14, %U A139728 19,18,1,9,12,1,18,11,4,3,21,3,4,19,5,11,8,12,2,8,10,14,1,0,0,20,6,13,9,47,10 %N A139728 Number of digits between successive occurrences of digit 0 in decimal representation of Pi. %H A139728 Harvey P. Dale, <a href="/A139728/b139728.txt">Table of n, a(n) for n = 1..1000</a> %t A139728 Differences[Flatten[Position[RealDigits[Pi,10,1000][[1]],0]]]-1 (* _Harvey P. Dale_, Jul 20 2019 *) %Y A139728 Cf. A135088, A000796. %K A139728 nonn,base %O A139728 1,1 %A A139728 Daniel Drijard (daniel.drijard(AT)cern.ch)