Talk:Hafner–Sarnak–McCurley constant

The sequence of powers $a_{k}$

Anyone able to say something about what $a_{k}$ is in Vardi's formula? Orthografer (talk) 21:33, 2 February 2011 (UTC)

I want to know too.Ofir michael (talk) 14:56, 16 October 2013 (UTC)

It would be better to leave Vardi's formula out, if a_k is not going to be explained. JoDu987 (talk) 16:25, 28 December 2013 (UTC)

It seems that they are computed from the Taylor coefficients of $(1-(1-\sum _{n=1}^{\infty }(1-z^{n}))^{2})$; If the power k coefficient is $b_{k}$, then $a_{m}=\sum _{k|m}\mu (k)b_{m/k}/k$.Ben Standeven (talk) 02:35, 1 September 2014 (UTC)