A083616 - OEIS

%I #14 Jan 16 2015 03:32:32

%S 54525,57609,74544,75558,83075,97382,106823,108041,130571,135340,

%T 137820,163656,164061,171688,201039,226761,235180,249462,253741,

%U 280191,301142,331550,366179,366941,410226,416365,420021,428389,445365,451439,456129

%N Starting positions of strings of four 4'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,9! ]],2],"4444"]][[1]] (* _Vladimir Joseph Stephan Orlovsky_, Jun 19 2009 *)

%Y Cf. A083615 (three 4's), A083617 (five 4's).

%K base,nonn

%O 1,1

%A _Rick L. Shepherd_, May 02 2003