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A127266
Expansion of 1/Pi in base 2.
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
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: A286907 A284851 A289741 * A083923 A352824 A101309
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