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A053745 Positions of '1's in the decimal expansion of Pi (where positions 1,2,3,... refer to the digits 3,1,4,...). 4
2, 4, 38, 41, 50, 69, 95, 96, 104, 111, 139, 149, 154, 155, 156, 164, 169, 175, 176, 199, 207, 221, 239, 244, 247, 251, 270, 282, 296, 298, 315, 320, 325, 343, 345, 363, 364, 382, 386, 391, 394, 396, 397, 418 (list; graph; refs; listen; history; text; internal format)
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) = 1 + A037000(n), a variant where position 1 is the first digit after the decimal point. - M. F. Hasler, Mar 20 2017

MATHEMATICA

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

PROG

(PARI) default(realprecision, 2017); for(i=3, #d=Vecsmall(Str(Pi)), d[i]==1&&print1(i-1", ")) \\ M. F. Hasler, Mar 20 2017

CROSSREFS

Cf. A014976, A053746-A053753.

Sequence in context: A018304 A289988 A051692 * A019275 A012433 A012438

Adjacent sequences:  A053742 A053743 A053744 * A053746 A053747 A053748

KEYWORD

nonn,base

AUTHOR

Simon Plouffe, Feb 20 2000

STATUS

approved

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Last modified November 17 01:05 EST 2019. Contains 329209 sequences. (Running on oeis4.)