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A180433 Binary string formed from the binary expansion of Pi by exchanging 0's and 1's. 3
0, 0, 1, 1, 0, 1, 1, 0, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 1, 0, 1, 0, 1, 0, 1, 1, 1, 0, 1, 1, 1, 0, 1, 1, 1, 1, 0, 1, 0, 0, 1, 0, 1, 1, 1, 0, 0, 1, 1, 1, 1, 0, 1, 1, 1, 0, 0, 1, 0, 1, 1, 0, 0, 1, 1, 1, 0, 1, 1, 0, 0, 1, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 1, 0, 1, 0, 1, 1, 1, 0, 1, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 0 (list; constant; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Binary complement of A004601.

May be converted to a decimal number in several ways, depending on where the binary point is inserted: .0011011011110... = 1-Pi/4, 0.011011011110... = 2-Pi/2 (see A180434), 00.11011011110... = 4-Pi.

LINKS

Table of n, a(n) for n=1..105.

MATHEMATICA

RealDigits[Pi, 2, 120][[1]]/.{1->0, 0->1} (* Harvey P. Dale, Apr 02 2015 *)

CROSSREFS

Cf. A004601, A180434.

Sequence in context: A288729 A286807 A126564 * A165560 A014306 A138150

Adjacent sequences:  A180430 A180431 A180432 * A180434 A180435 A180436

KEYWORD

base,cons,easy,nonn

AUTHOR

Jonathan Vos Post, Sep 05 2010

EXTENSIONS

Verified and edited by N. J. A. Sloane, Sep 28 2010

STATUS

approved

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Last modified March 21 22:19 EDT 2019. Contains 321382 sequences. (Running on oeis4.)