A180433 Binary string formed from the binary expansion of Pi by exchanging 0's and 1's.

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

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

Tarun Agarwal, Table of n, a(n) for n = 1..999

Mathematica

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

Crossrefs

Cf. A004601, A180434.

Sequence in context: A335617 A286807 A126564 * A358771 A165560 A358220

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