Biography

$S = 1 + 0 + \Large\frac{2}{3^{{1\over 2} s}}\normalsize \cos (\large\frac{2}{3}\normalsize n \pi - \large\frac{1}{2}\normalsize s \pi) + \Large\frac{2^{{1\over 2} s+1}}{4^{{1\over 2} s}}\normalsize \cos (\large\frac{1}{2}\normalsize n \pi - \large\frac{1}{4}\normalsize s \pi) + \Large\frac{2}{5^{{1\over 2} s}}\normalsize \left\{\cos (\large\frac{2}{5}\normalsize n \pi + \cos (\large\frac{4}{5}\normalsize n \pi -s \pi)\right\} +0 + ...$