A083626 Starting positions of strings of four 6's in the decimal expansion of Pi.

21880, 29868, 32427, 43523, 48439, 48440, 59983, 64870, 74392, 100537, 102387, 102388, 124494, 131591, 140744, 140745, 141919, 147343, 151265, 161077, 162317, 166974, 180722, 194824, 200045, 226102, 250129, 250130, 252499, 252500, 252501

Offset

1,1

Links

Table of n, a(n) for n=1..31.

Index entries for sequences related to the number Pi

Dave Andersen, Pi-Search Page

Eric Weisstein's World of Mathematics, Pi Digits.

Mathematica

Transpose[StringPosition[StringDrop[ToString[N[Pi, 9! ]], 2], "6666"]][[1]] (* Vladimir Joseph Stephan Orlovsky, Jun 19 2009 *)
Flatten[Position[Partition[RealDigits[Pi, 10, 260000][[1]], 4, 1], {6, 6, 6, 6}]]-1 (* Harvey P. Dale, Apr 27 2012 *)

Crossrefs

Cf. A083625 (three 6's), A083627 (five 6's).

Sequence in context: A069312 A022206 A251510 * A234214 A345152 A345146

Adjacent sequences: A083623 A083624 A083625 * A083627 A083628 A083629

Keyword

base,nonn

Author

Rick L. Shepherd, May 03 2003

Status

approved