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A030657 Parity of digits of Pi. 7
1, 1, 0, 1, 1, 1, 0, 0, 1, 1, 1, 0, 1, 1, 1, 1, 0, 1, 0, 0, 0, 0, 0, 0, 1, 1, 0, 1, 0, 1, 1, 1, 0, 0, 0, 0, 0, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 0, 0, 0, 1, 1, 0, 1, 0, 0, 1, 1, 0, 1, 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Moshe Levin, Table of n, a(n) for n = 1..10000

FORMULA

a(n) = A000035(A000796(n)). - Omar E. Pol, Oct 26 2013

MATHEMATICA

s = First[RealDigits[N[Pi, 1000]]]; aa = {}; Do[If[OddQ[s[[n]]], AppendTo[aa, 1], AppendTo[aa, 0]], {n, 1, Length[s]}]; aa (* Artur Jasinski, Mar 05 2010 *)

s= RealDigits[N[Pi, 10000]][[1]]; Table[{n, Mod[s[[n]], 2]}, {n, 10000}](* this gives b-file *)(* Moshe Levin, Oct 05 2011*)

CROSSREFS

Cf. A173999, A174000.

Sequence in context: A176329 A030302 A051023 * A249066 A176178 A165728

Adjacent sequences:  A030654 A030655 A030656 * A030658 A030659 A030660

KEYWORD

nonn,base,easy

AUTHOR

Maghraoui Abdelkader

EXTENSIONS

More terms from Simon Plouffe.

STATUS

approved

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Last modified November 23 19:08 EST 2017. Contains 295128 sequences.