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%I #17 Jan 09 2015 08:55:39
%S 307,360,601,602,855,856,973,1175,1189,1359,1414,1598,1599,1608,1817,
%T 1836,1998,2339,2602,2806,2881,3154,3202,3284,3298,3481,3849,4076,
%U 4199,4202,4255,4256,4367,4698,4755,4793,4794,5070,5093,5168,5685
%N Starting positions of strings of 2 0's in the decimal expansion of Pi.
%H Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/PiDigits.html">Pi Digits</a>
%H <a href="/index/Ph#Pi314">Index entries for sequences related to the number Pi</a>
%t a=RealDigits[Pi,10,8! ];lst={};Do[b=a[[1]][[n]];c=a[[1]][[n+1]];If[b==0&&c==0,AppendTo[lst,n-1]],{n,8!-1}];lst (* _Vladimir Joseph Stephan Orlovsky_, Jun 02 2009 *)
%Y Cf. A000796.
%K nonn,base
%O 1,1
%A _Eric W. Weisstein_