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A083643 Starting positions of strings of four 9's in the decimal expansion of Pi. 3
762, 763, 764, 17988, 19437, 19446, 19447, 22753, 31900, 42095, 56988, 56989, 81293, 120564, 140953, 161862, 161863, 177122, 182604, 191104, 193034, 193035, 193036, 204198, 210140, 211794, 220507, 220568, 220569, 224317, 235425, 235775 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
Dave Andersen, Pi-Search Page
Eric Weisstein's World of Mathematics, Pi Digits.
MATHEMATICA
Transpose[StringPosition[StringDrop[ToString[N[Pi, 9! ]], 2], "9999"]][[1]] (* Vladimir Joseph Stephan Orlovsky, Jun 19 2009 *)
Module[{digs=240000, p}, p=RealDigits[Pi, 10, digs][[1]]; SequencePosition[p, {9, 9, 9, 9}][[All, 1]]-1] (* Harvey P. Dale, Jan 12 2023 *)
CROSSREFS
Cf. A083642 (three 9's), A083644 (five 9's).
Sequence in context: A139664 A160033 A083642 * A083644 A061225 A253615
KEYWORD
base,nonn
AUTHOR
Rick L. Shepherd, May 05 2003
STATUS
approved

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Last modified August 30 07:09 EDT 2024. Contains 375532 sequences. (Running on oeis4.)