OFFSET
1,2
REFERENCES
John Derbyshire, "Prime Obsession", Joseph Henry Press, 2003, p. 249.
FORMULA
Partial sums of convergents to 6/Pi^2 = 1/Zeta(2) = Sum_{k>=1} (mu(k)/k^2) = 1 - 1/2^2 - 1/3^2 - 1/5^2 + 1/6^2 ...
EXAMPLE
First few convergents to 6/Pi^2 are: 1/1, 3/4, 23/36, 539/900, 47/75, 2228/3675, 9059/14700, ...
MATHEMATICA
Denominator @ Accumulate[DeleteCases[Table[MoebiusMu[k]/k^2, {k, 1, 40}], 0]] (* Amiram Eldar, Feb 26 2020 *)
CROSSREFS
KEYWORD
nonn,frac
AUTHOR
Gary W. Adamson, Feb 04 2007
EXTENSIONS
More terms from Amiram Eldar, Feb 26 2020
STATUS
approved