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A174000 Successive positions of even digits after comma in decimal expansion of Pi 2

%I

%S 2,6,7,11,16,18,19,20,21,22,23,26,28,32,33,34,35,36,41,50,52,53,54,57,

%T 59,60,63,65,67,69,70,71,72,73,74,75,76,77,78,81,82,83,84,85,87,88,89,

%U 92,93,97,98,101,102,104,105,106,107,108,112,113,114,116,117,118,119

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

%e Pi=3,141592653589793...

%e 2 is in this sequence because second digit after comma 4 is even.

%t s = First[RealDigits[N[Pi, 1000]]]; aa = {}; Do[If[OddQ[s[[n]]], AppendTo[aa, n - 1]], {n, 1, Length[s]}]; aa (*Artur Jasinski*)

%t Flatten[Position[RealDigits[Pi,10,150][[1]],_?EvenQ]]-1 (* _Harvey P. Dale_, Sep 12 2017 *)

%Y Cf. A000796, A173999.

%K nonn,base

%O 1,1

%A _Artur Jasinski_, Mar 05 2010

%E Edited by _Charles R Greathouse IV_, Aug 02 2010

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Last modified February 25 04:32 EST 2020. Contains 332217 sequences. (Running on oeis4.)