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A229099 Decimal expansion of 1 - 6/Pi^2. 8

%I

%S 3,9,2,0,7,2,8,9,8,1,4,5,9,7,3,3,7,1,3,3,6,7,2,3,2,2,0,7,4,1,6,3,4,1,

%T 6,6,5,7,3,8,4,7,3,5,1,9,6,6,5,2,0,7,0,6,9,2,6,3,4,5,8,0,8,6,3,4,9,6,

%U 1,2,7,4,2,2,6,5,8,7,3,5,2,8,5,2,7,4,4,3,5,6,4,4

%N Decimal expansion of 1 - 6/Pi^2.

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

%H Charles R Greathouse IV, <a href="/A229099/b229099.txt">Table of n, a(n) for n = 0..10000</a>

%e 0.39207289814597337133672322074163416657384735196652070692634580863496...

%o (PARI) 1-6/Pi^2

%Y Cf. A059956, A063035.

%K nonn,cons,easy

%O 0,1

%A _Charles R Greathouse IV_, Sep 13 2013

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Last modified August 18 00:56 EDT 2019. Contains 326059 sequences. (Running on oeis4.)