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%I #16 Jan 09 2015 08:55:21
%S 601,855,1598,4255,4793,7832,8879,12174,13390,13391,14202,14637,15113,
%T 15693,17534,17535,17536,21258,22399,22759,23147,24286,25828,26179,
%U 28990,29456,29789,31615,32368,32569,35133,35371,36332,36870,37322
%N Starting positions of strings of 3 0's in the decimal expansion of Pi.
%H <a href="/index/Ph#Pi314">Index entries for sequences related to the number Pi</a>
%H Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/PiDigits.html">Pi Digits</a>
%t a=RealDigits[Pi,10,9! ];lst={};Do[b=a[[1]][[n]];c=a[[1]][[n+1]];d=a[[1]][[n+2]];If[b==0&&c==0&&d==0,AppendTo[lst,n-1]],{n,9!-2}];lst (* _Vladimir Joseph Stephan Orlovsky_, Jun 02 2009 *)
%Y Cf. A000796.
%K nonn,base
%O 1,1
%A _Eric W. Weisstein_