A053746 Positions of 2's in the decimal expansion of Pi.

7, 17, 22, 29, 34, 54, 64, 74, 77, 84, 90, 94, 103, 113, 115, 136, 137, 141, 150, 161, 166, 174, 186, 187, 204, 222, 230, 242, 245, 261, 276, 281, 290, 293, 299, 303, 327, 330, 334, 336, 338, 355, 375, 381, 407

Offset

1,1

Links

Vincenzo Librandi, Table of n, a(n) for n = 1..1000

Index entries for sequences related to the number Pi

Formula

a(n) = A037001(n) + 1. - Georg Fischer, May 31 2021

Mathematica

Flatten[Position[RealDigits[Pi, 10, 1000][[1]], 2]] (* Vincenzo Librandi, Oct 07 2013 *)

Crossrefs

Cf. A037001.

Sequence in context: A354168 A287182 A104480 * A327830 A144695 A125244

Adjacent sequences: A053743 A053744 A053745 * A053747 A053748 A053749

Keyword

nonn,base

Author

Simon Plouffe, Feb 20 2000

Extensions

Changed offset from 0 to 1 by Vincenzo Librandi, Oct 07 2013

Status

approved