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A083606 Starting positions of strings of three 2's in the decimal expansion of Pi. 1
1735, 1889, 2278, 2376, 3434, 4902, 4903, 7911, 7964, 7965, 9203, 9293, 9334, 10427, 11704, 12486, 12487, 12857, 13040, 13562, 13725, 14668, 16679, 17619, 17882, 19099, 19479, 21576, 25469, 26266, 26959, 27433, 29447, 30291, 30454, 30527 (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
a=RealDigits[Pi, 10, 7*7! ]; lst={}; Do[b=a[[1]][[n]]; c=a[[1]][[n+1]]; d=a[[1]][[n+2]]; If[b==2&&c==2&&d==2, AppendTo[lst, n-1]], {n, 6!, 7*7!-2}]; lst (* Vladimir Joseph Stephan Orlovsky, Jun 07 2009 *)
#-1&/@(Flatten[Position[Union[#]&/@Partition[RealDigits[Pi, 10, 35000][[1]], 3, 1], {2}]]) (* Harvey P. Dale, Oct 01 2011 *)
SequencePosition[RealDigits[Pi, 10, 35000][[1]], {2, 2, 2}][[;; , 1]]-1 (* Harvey P. Dale, Apr 09 2023 *)
CROSSREFS
Cf. A050215 (two 2's), A083607 (four 2's).
Sequence in context: A179914 A113701 A283385 * A280927 A095847 A253696
KEYWORD
base,nonn
AUTHOR
Rick L. Shepherd, May 01 2003
STATUS
approved

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Last modified June 18 21:09 EDT 2024. Contains 373487 sequences. (Running on oeis4.)