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 A083631 Starting positions of strings of three 7's in the decimal expansion of Pi. 1
 1589, 1590, 4575, 5241, 5242, 5322, 5323, 5355, 5450, 5863, 5864, 11298, 11733, 12661, 14292, 15501, 17234, 17502, 18516, 19903, 20404, 21423, 21571, 23538, 23749, 24373, 25551, 25788, 25858, 26796, 29504, 29505, 30988, 32478, 32479 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Position counted from and after decimal point. - Harvey P. Dale, Mar 13 2023 LINKS Dave Andersen, Pi-Search Page Eric Weisstein's World of Mathematics, Pi Digits. MATHEMATICA q=9!; z=7; 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, 33000][[1]], {7, 7, 7}][[;; , 1]]-1 (* Harvey P. Dale, Mar 13 2023 *) CROSSREFS Cf. A050254 (two 7's), A083632 (four 7's). Sequence in context: A224942 A224950 A233378 * A224938 A083632 A224939 Adjacent sequences: A083628 A083629 A083630 * A083632 A083633 A083634 KEYWORD base,nonn AUTHOR Rick L. Shepherd, May 04 2003 STATUS approved

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Last modified March 28 23:19 EDT 2023. Contains 361596 sequences. (Running on oeis4.)