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A083620 Starting positions of strings of three 5's in the decimal expansion of Pi. 1
177, 1232, 1450, 2359, 2674, 7245, 7317, 7681, 10145, 10493, 11319, 14176, 17052, 18353, 18717, 18760, 19811, 20535, 20982, 21290, 22011, 22584, 23103, 24466, 24467, 24468, 24820, 24864, 26364, 26603, 30014, 31435, 32029, 32523, 33172 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Each starting position is counted from the decimal point - Harvey P. Dale, Aug 23 2021
LINKS
Dave Andersen, Pi-Search Page
Eric Weisstein's World of Mathematics, Pi Digits.
MATHEMATICA
q=9!; z=5; a=RealDigits[Pi, 10, q]; lst={}; Do[b=a[[1]][[n]]; c=a[[1]][[n+1]]; d=a[[1]][[n+2]]; If[b==z&&c==z&&d==z, AppendTo[lst, n-1]], {n, q-2}]; lst (* Vladimir Joseph Stephan Orlovsky, Jun 19 2009 *)
SequencePosition[RealDigits[Pi, 10, 35000][[1]], {5, 5, 5}][[All, 1]]-1 (* Harvey P. Dale, Aug 23 2021 *)
CROSSREFS
Cf. A050238 (two 5's), A083621 (four 5's).
Sequence in context: A147028 A105988 A292185 * A097317 A052461 A173375
KEYWORD
base,nonn
AUTHOR
Rick L. Shepherd, May 02 2003
STATUS
approved

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Last modified June 24 09:18 EDT 2024. Contains 373674 sequences. (Running on oeis4.)