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 A180433 Binary string formed from the binary expansion of Pi by exchanging 0's and 1's. 3

%I

%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,

%T 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,

%U 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

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

%C Binary complement of A004601.

%C 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.

%t RealDigits[Pi,2,120][[1]]/.{1->0,0->1} (* _Harvey P. Dale_, Apr 02 2015 *)

%Y Cf. A004601, A180434.

%K base,cons,easy,nonn

%O 1,1

%A _Jonathan Vos Post_, Sep 05 2010

%E Verified and edited by _N. J. A. Sloane_, Sep 28 2010

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Last modified August 11 03:07 EDT 2020. Contains 336421 sequences. (Running on oeis4.)