Johnny

Failed to parse (MathML with SVG or PNG fallback (recommended for modern browsers and accessibility tools): Invalid response ("Math extension cannot connect to Restbase.") from server "https://en.wikipedia.org/api/rest_v1/":): {\displaystyle \sum_{m=1}^\infty\sum_{n=1}^\infty\frac{m^3 2n}{4^m\left(m 6^n + n 8^m\right)}}