A050222 Starting positions of strings of 2 3's in the decimal expansion of Pi.

24, 215, 230, 282, 364, 401, 503, 507, 831, 875, 1032, 1127, 1302, 1353, 1667, 1686, 1698, 1699, 1986, 2568, 2841, 3175, 3289, 3488, 3583, 3620, 3702, 3719, 3833, 3918, 4101, 4265, 4325, 4594, 4623, 4689, 4814, 4928, 4929, 5211, 5269, 5398

Offset

1,1

Comments

Starting positions are counted from and after the decimal point. Harvey P. Dale, Mar 09 2022

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=3; a=RealDigits[Pi, 10, 2*7! ]; lst={}; Do[b=a[[1]][[n]]; c=a[[1]][[n+1]]; If[b==q&&c==q, AppendTo[lst, n-1]], {n, 2*7!-1}]; lst (* Vladimir Joseph Stephan Orlovsky, Jun 07 2009 *)
SequencePosition[RealDigits[Pi, 10, 6000][[1]], {3, 3}][[All, 1]]-1 (* Harvey P. Dale, Mar 09 2022 *)

Crossrefs

Cf. A000796.

Sequence in context: A108671 A097321 A105946 * A169635 A269496 A221434

Adjacent sequences: A050219 A050220 A050221 * A050223 A050224 A050225

Keyword

nonn,base

Author

Eric W. Weisstein

Status

approved