A083610 Starting positions of strings of three 3's in the decimal expansion of Pi.

1698, 4928, 6917, 7651, 8413, 8736, 8828, 12520, 17614, 21973, 22580, 22704, 22749, 23471, 25094, 25179, 28467, 28468, 28469, 30583, 32631, 33095, 35838, 37507, 38597, 41392, 42438, 42734, 45756, 48033, 48207, 48369, 49287, 50547, 52794, 52985, 53683, 53693, 55783

Offset

1,1

Links

Harvey P. Dale, Table of n, a(n) for n = 1..5000

Dave Andersen, Pi-Search Page.

Eric Weisstein's World of Mathematics, Pi Digits.

Index entries for sequences related to the number Pi

Mathematica

Flatten[Position[Partition[RealDigits[Pi, 10, 53000][[1]], 3, 1], {3, 3, 3}]]-1 (* Harvey P. Dale, Mar 05 2015 *)
(* Alternative: *)
SequencePosition[RealDigits[Pi, 10, 60000][[1]], {3, 3, 3}][[;; , 1]]-1 (* Harvey P. Dale, May 14 2026 *)

Crossrefs

Cf. A000796 (Pi), A050222 (two 3's), A083611 (four 3's).

Sequence in context: A301985 A237845 A340170 * A020405 A091368 A263344

Adjacent sequences: A083607 A083608 A083609 * A083611 A083612 A083613

Keyword

base,nonn

Author

Rick L. Shepherd, May 01 2003

Status

approved