

A174000


Successive positions of even digits after comma in decimal expansion of Pi


2



2, 6, 7, 11, 16, 18, 19, 20, 21, 22, 23, 26, 28, 32, 33, 34, 35, 36, 41, 50, 52, 53, 54, 57, 59, 60, 63, 65, 67, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 81, 82, 83, 84, 85, 87, 88, 89, 92, 93, 97, 98, 101, 102, 104, 105, 106, 107, 108, 112, 113, 114, 116, 117, 118, 119
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OFFSET

1,1


LINKS

Table of n, a(n) for n=1..65.


EXAMPLE

Pi=3,141592653589793...
2 is in this sequence because second digit after comma 4 is even.


MATHEMATICA

s = First[RealDigits[N[Pi, 1000]]]; aa = {}; Do[If[OddQ[s[[n]]], AppendTo[aa, n  1]], {n, 1, Length[s]}]; aa (*Artur Jasinski*)
Flatten[Position[RealDigits[Pi, 10, 150][[1]], _?EvenQ]]1 (* Harvey P. Dale, Sep 12 2017 *)


CROSSREFS

Cf. A000796, A173999.
Sequence in context: A286995 A088227 A231500 * A241720 A224082 A051678
Adjacent sequences: A173997 A173998 A173999 * A174001 A174002 A174003


KEYWORD

nonn,base


AUTHOR

Artur Jasinski, Mar 05 2010


EXTENSIONS

Edited by Charles R Greathouse IV, Aug 02 2010


STATUS

approved



