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A050230 Starting positions of strings of 2 4's in the decimal expansion of Pi. 1
59, 125, 182, 201, 217, 453, 511, 655, 726, 804, 833, 1249, 1252, 1508, 1639, 1904, 2085, 2261, 2309, 2350, 2707, 2708, 2764, 2799, 2827, 2845, 2928, 2929, 3109, 3139, 3372, 3476, 3477, 3681, 3717, 3787, 3809, 3810, 3851, 3866, 3867, 3905 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..42.

Eric Weisstein's World of Mathematics, Pi Digits

Index entries for sequences related to the number Pi

MATHEMATICA

q=8!; z=4; a=RealDigits[Pi, 10, q]; lst={}; Do[b=a[[1]][[n]]; c=a[[1]][[n+1]]; If[b==z&&c==z, AppendTo[lst, n-1]], {n, q-1}]; lst (* Vladimir Joseph Stephan Orlovsky, Jun 19 2009 *)

Flatten[Position[Partition[Rest[RealDigits[Pi, 10, 5000][[1]]], 2, 1], _? (#=={4, 4}&)]] (* Harvey P. Dale, Jul 20 2011 *)

CROSSREFS

Cf. A000796.

Sequence in context: A141934 A044246 A044627 * A138633 A237687 A098032

Adjacent sequences:  A050227 A050228 A050229 * A050231 A050232 A050233

KEYWORD

nonn,base

AUTHOR

Eric W. Weisstein

STATUS

approved

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Last modified July 23 22:47 EDT 2019. Contains 325278 sequences. (Running on oeis4.)