Feller–Tornier constant

In mathematics, the Feller–Tornier constant CFT is the density of the set of all positive integers that have an even number of distinct prime factors raised to a power larger than one (ignoring any prime factors which appear only to the first power).It is named after William Feller (1906–1970) and Erhard Tornier (1894–1982) (sequence in the OEIS)

Feller–Tornier constant

In mathematics, the Feller–Tornier constant CFT is the density of the set of all positive integers that have an even number of distinct prime factors raised to a power larger than one (ignoring any prime factors which appear only to the first power).It is named after William Feller (1906–1970) and Erhard Tornier (1894–1982) (sequence in the OEIS)