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Starting positions of strings of five 3's in the decimal expansion of Pi.
2

%I #17 Mar 01 2020 01:09:51

%S 28467,89085,146043,335792,680738,710100,710101,710102,899654,987207,

%T 1108406,1129019,1129020,1135766,1321501,1454595,1961784,2305499,

%U 2384621,2403869,2607453,2657509,2756644,2872302,2961123,3079956,3155439,3204765,3204766,3204767,3209586

%N Starting positions of strings of five 3's in the decimal expansion of Pi.

%H Dave Andersen, <a href="http://www.angio.net/pi/piquery">Pi-Search Page</a>

%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 Transpose[StringPosition[StringDrop[ToString[N[Pi,10! ]],2],"33333"]][[1]] (* _Vladimir Joseph Stephan Orlovsky_, Jun 19 2009 *)

%Y Cf. A083611 (four 3's), A083613 (six 3's).

%K nonn,base

%O 1,1

%A _Rick L. Shepherd_, May 01 2003

%E More terms from _Jinyuan Wang_, Feb 29 2020