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 A083615 Starting positions of strings of three 4's in the decimal expansion of Pi. 1
 2707, 2928, 3476, 3809, 3866, 4175, 4923, 5290, 5675, 6327, 6346, 9384, 9445, 13565, 18912, 21929, 23157, 23223, 25937, 26531, 27887, 28220, 28872, 34587, 35496, 36878, 37072, 37758, 37989, 39388, 39826, 42220, 42424, 45136, 45796, 46495 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS Table of n, a(n) for n=1..36. Index entries for sequences related to the number Pi Dave Andersen, Pi-Search Page Eric Weisstein's World of Mathematics, Pi Digits. MATHEMATICA q=9!; z=4; 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 *) With[{p=Partition[RealDigits[Pi, 10, 50000][[1]], 3, 1]}, Flatten[Position[ p, _?(# == {4, 4, 4}&)]]-1] (* Harvey P. Dale, Nov 22 2014 *) SequencePosition[RealDigits[Pi, 10, 50000][[1]], {4, 4, 4}][[All, 1]]-1 (* Harvey P. Dale, Apr 11 2022 *) CROSSREFS Cf. A050230 (two 4's), A083616 (four 4's). Sequence in context: A205605 A205436 A031550 * A205750 A205472 A252430 Adjacent sequences: A083612 A083613 A083614 * A083616 A083617 A083618 KEYWORD base,nonn AUTHOR Rick L. Shepherd, May 02 2003 STATUS approved

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Last modified September 22 03:20 EDT 2023. Contains 365503 sequences. (Running on oeis4.)