OFFSET
0,1
COMMENTS
Squarefree constant: binary expansion is the characteristic function of squarefree numbers (A008966).
FORMULA
Equals Sum_{k>=1} mu(k)/(2^(k^2) - 1). - Amiram Eldar, Jun 22 2020
EXAMPLE
0.93137635638313358... = (0.1110111001...)_2.
||| ||| |
123 567 10
MATHEMATICA
RealDigits[Sum[MoebiusMu[n]^2/2^n, {n, 1, 500}], 10, 100][[1]] (* Amiram Eldar, Jun 22 2020 *)
CROSSREFS
KEYWORD
nonn,cons
AUTHOR
Ilya Gutkovskiy, Mar 10 2020
STATUS
approved