0,1

Probability that a random number is not squarefree; probability that two random numbers have a common divisor greater than 1.

Charles R Greathouse IV, Table of n, a(n) for n = 0..10000

0.39207289814597337133672322074163416657384735196652070692634580863496...

(PARI) 1-6/Pi^2

Cf. A059956, A063035.

Sequence in context: A179430 A016048 A256501 * A021259 A194807 A114875

Adjacent sequences: A229096 A229097 A229098 * A229100 A229101 A229102

nonn,cons,easy

Charles R Greathouse IV, Sep 13 2013

approved