A083611 Starting positions of strings of four 3's in the decimal expansion of Pi.

28467, 28468, 66846, 79979, 84542, 89085, 89086, 93498, 95730, 119658, 145459, 146043, 146044, 150803, 158335, 162369, 169124, 172951, 178501, 186291, 190241, 191664, 193042, 214252, 217711, 222180, 231023, 235521, 263318, 263955, 297544

Offset

1,1

Links

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

Dave Andersen, Pi-Search Page

Eric Weisstein's World of Mathematics, Pi Digits.

Index entries for sequences related to the number Pi

Mathematica

Transpose[StringPosition[StringDrop[ToString[N[Pi, 9! ]], 2], "3333"]][[1]] (* Vladimir Joseph Stephan Orlovsky, Jun 19 2009 *)
Flatten[Position[Partition[RealDigits[Pi, 10, 300000][[1]], 4, 1], _?(#== {3, 3, 3, 3}&)]]-1 (* Harvey P. Dale, Oct 25 2011 *)

Crossrefs

Cf. A083610 (three 3's), A083612 (five 3's).

Sequence in context: A250992 A250630 A236595 * A083612 A252879 A231417

Adjacent sequences: A083608 A083609 A083610 * A083612 A083613 A083614

Keyword

base,nonn

Author

Rick L. Shepherd, May 01 2003

Status

approved