A127266 Expansion of 1/Pi in base 2.

0, 1, 0, 1, 0, 0, 0, 1, 0, 1, 1, 1, 1, 1, 0, 0, 1, 1, 0, 0, 0, 0, 0, 1, 1, 0, 1, 1, 0, 1, 1, 1, 0, 0, 1, 0, 0, 1, 1, 1, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 1, 0, 1, 0, 0, 1, 0, 1, 0, 0, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 1, 0, 0, 1, 1, 1, 0, 1, 0, 1, 0

Offset

0

Links

Table of n, a(n) for n=0..85.

Sanjar M. Abrarov, Rehan Siddiqui, Rajinder K. Jagpal, and Brendan M. Quine, A rational approximation of the two-term Machin-like Formula for Pi, Preprints 2024, 2024060554.

Formula

a(n) = A024810(n) mod 2. - Sanjar Abrarov, Jun 18 2024

Example

0.0101000101111100110000011011...

Mathematica

Join[{0}, RealDigits[1/Pi, 2, 120][[1]]] (* Harvey P. Dale, Mar 05 2016 *)

Crossrefs

Cf. A024810.

Cf. A004601 (binary expansion of Pi), A049541 (1/Pi in decimal), A346218 (1/Pi in signed binary non-adjacent form).

Sequence in context: A284851 A289741 A185276 * A083923 A352824 A101309

Adjacent sequences: A127263 A127264 A127265 * A127267 A127268 A127269

Keyword

base,easy,nonn

Author

Thomas Klemm (thomas.klemm(AT)adnouvm.ch), Mar 27 2007

Extensions

Corrected by Harvey P. Dale, Mar 05 2016

Status

approved