A083637 - OEIS

A083637

Starting positions of strings of three 8's in the decimal expansion of Pi.

4751, 4752, 4985, 5871, 6070, 6850, 9338, 10229, 10527, 14298, 16763, 16910, 17164, 18483, 19469, 19752, 20337, 20807, 21225, 22192, 22216, 22770, 23079, 25062, 25196, 26886, 27750, 30086, 30633, 30687, 30796, 30797, 32251, 33850, 35639

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

LINKS

Harvey P. Dale, Table of n, a(n) for n = 1..1000

Index entries for sequences related to the number Pi

Dave Andersen, Pi-Search Page

Eric Weisstein's World of Mathematics, Pi Digits.

MATHEMATICA

q=9!; z=8; a=RealDigits[Pi, 10, q]; lst={}; Do[b=a[[1]][[n]]; c=a[[1]][[n+1]]; d=a[[1]][[n+2]]; If[b==z&&c==z&&d==z, AppendTo[lst, n-1]], {n, q-2}]; lst (* Vladimir Joseph Stephan Orlovsky, Jun 19 2009 *)

SequencePosition[RealDigits[Pi, 10, 36000][[1]], {8, 8, 8}][[All, 1]]-1 (* Requires Mathematica version 10 or later *) (* Harvey P. Dale, Oct 02 2018 *)

CROSSREFS

Cf. A050263 (two 8's), A083638 (four 8's).

Sequence in context: A252226 A252204 A374502 * A083638 A237553 A250467

Adjacent sequences: A083634 A083635 A083636 * A083638 A083639 A083640

KEYWORD

base,nonn

AUTHOR

Rick L. Shepherd, May 05 2003

STATUS

approved