A083604 Starting positions of strings of six 1's in the decimal expansion of Pi.

255945, 2645268, 3218870, 4657555, 4657556, 5130874, 5425806, 5961931, 6653783, 9036112, 11867965, 13249047, 13255651, 15684440, 18548887, 20316848, 22107705, 22564362, 23503699, 28388441, 28580580, 29435972, 30584158, 31678241

Offset

1,1

Links

Table of n, a(n) for n=1..24.

Dave Andersen, Pi-Search Page

Eric Weisstein's World of Mathematics, Pi Digits.

Index entries for sequences related to the number Pi

Mathematica

$MaxPrecision=10^8; a=RealDigits[Pi, 10, 8*9! ]; lst={}; Do[b=a[[1]][[n]]; c=a[[1]][[n+1]]; d=a[[1]][[n+2]]; e=a[[1]][[n+3]]; f=a[[1]][[n+4]]; g=a[[1]][[n+5]]; If[b==1&&c==1&&d==1&&e==1&&f==1&&g==1, AppendTo[lst, n-1]], {n, 2*8!, 8*9!-5}]; lst (* Vladimir Joseph Stephan Orlovsky, Jun 07 2009 *)
SequencePosition[RealDigits[Pi, 10, 32*10^6][[1]], {1, 1, 1, 1, 1, 1}][[All, 1]]-1 (* Requires Mathematica version 10 or later *) (* Harvey P. Dale, Jul 04 2018 *)

Crossrefs

Cf. A083603 (five 1's), A083605 (seven 1's).

Sequence in context: A161534 A052197 A053076 * A236600 A105656 A105657

Adjacent sequences: A083601 A083602 A083603 * A083605 A083606 A083607

Keyword

base,nonn

Author

Rick L. Shepherd, May 01 2003

Status

approved