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pi = 2* 1/sqrt(1/2) * 1/sqrt((1+sqrt(1/2))/2) * 1/sqrt((1+sqrt((1+sqrt(1/2))/2))/2) * ...$\pi = 2 \times 1/\sqrt(1/2) \times 1/\sqrt((1+\sqrt(1/2))/2) \times 1/\sqrt((1+\sqrt((1+\sqrt(1/2))/2))/2) \times \ldots $
pi = 2* 1/sqrt(1/2) * 1/sqrt((1+sqrt(1/2))/2) * 1/sqrt((1+sqrt((1+sqrt(1/2))/2))/2) * ...
$\pi = 2 \times 1/\sqrt(1/2) \times 1/\sqrt((1+\sqrt(1/2))/2) \times 1/\sqrt((1+\sqrt((1+\sqrt(1/2))/2))/2) \times \ldots $
