catalan top-level constant

const catalan = 0.9159655941772190150546035149323841107741493742816721342664981196217630197762547694794

The Catalan constant

Remarks

Sum(k=0 -> inf){ (-1)^k/(2*k + 1)2 }

Implementation

const double catalan =
    0.9159655941772190150546035149323841107741493742816721342664981196217630197762547694794