A083616 Starting positions of strings of four 4's in the decimal expansion of Pi.

54525, 57609, 74544, 75558, 83075, 97382, 106823, 108041, 130571, 135340, 137820, 163656, 164061, 171688, 201039, 226761, 235180, 249462, 253741, 280191, 301142, 331550, 366179, 366941, 410226, 416365, 420021, 428389, 445365, 451439, 456129

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], "4444"]][[1]] (* Vladimir Joseph Stephan Orlovsky, Jun 19 2009 *)

Crossrefs

Cf. A083615 (three 4's), A083617 (five 4's).

Sequence in context: A251479 A203624 A250857 * A235104 A205997 A091536

Adjacent sequences: A083613 A083614 A083615 * A083617 A083618 A083619

Keyword

base,nonn

Author

Rick L. Shepherd, May 02 2003

Status

approved